I think it was actually your game in the opening since White had two weak groups. But you didn't try to profit from them and when you finally played near them you strengthened them in the first place. Maybe a quick browse through of Attack and Defend? ; )
And more Tsumegos/Tesujis! : D
Aside from that: Some comments, ideas etc. : )
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[6.50]TM[1500]OT[5x30 byo-yomi]
PW[Csendelet]PB[hailthorn]WR[4k]BR[6k]DT[2013-01-25]PC[The KGS Go Server at <!-- m --><a class="postlink" href="http://www.gokgs.com/">http://www.gokgs.com/</a><!-- m -->]RE[W+Resign]
;B[pd]BL[1489.945]
;W[dc]WL[1485.515]
;B[dp]BL[1427.217]
;W[pq]WL[1436.58]
;B[po]BL[1393.205]
;W[qm]WL[1407.185]
;B[qq]BL[1268.714]
;W[qr]WL[1387.909]
;B[qp]BL[1245.247]
;W[mq]WL[1383.558]
;B[om]BL[1202.47]C[This Joseki is really high-level and has quite a few variations...]
;W[pm]WL[1377.477]
;B[on]BL[1160.667]
;W[pk]WL[1367.411]C[And now I'm not sure if this is Joseki anymore. (Don't have my Takeo at me right now ^^)]
;B[rr]BL[1056.168]
;W[pr]WL[1343.347]LB[jq:B][rr:A]TR[mq]C[Greedy of White.
The marked stone is designed (as far as I understand it) to make for a speedy opening. So after A White should play B since just connecting doesn't really make the group solid.]
;B[fq]BL[995.164]LB[kq:A]C[Close but not perfect.
Check the White group and gain from White's greedy play!]
;W[cj]WL[1320.843]LB[pk:B][mq:A]C[Hmmmm...
A and B are not strong for White. This move completely misses the point I think.]
;B[jc]BL[862.907]LB[kq:A]C[This move, too, misses the point.
A uses your wall and the right to attack.]
;W[pg]WL[1294.562]C[Third line would be safer, I think.]
;B[pi]BL[806.787]LB[kq:A]C[Still A.]
;W[qi]WL[1269.366]
;B[qh]BL[659.049]
;W[ph]WL[1263.135]
;B[qj]BL[650.071]
;W[oi]WL[1254.827]
;B[pj]BL[644.68]
;W[oj]WL[1251.222]
;B[qg]BL[640.134]
;W[ri]WL[1223.806]
;B[rj]BL[623.081]
;W[qf]WL[1219.684]LB[rk:A][ol:B]C[Maybe forcing with A and then coming back at protecting the cut at B is better here. This might force Black to defend his wall so that White can defend his lower side.]
;B[rh]BL[619.033]
;W[of]WL[1201.399]LB[rg:A]C[A first now.]
;B[qk]BL[601.996]LB[rf:B][ok:A][rl:C]C[Don't force White to defend the cut!
Cut! Your goup has B and C Miai to live, when I'm not mistake.]
;W[ol]WL[1181.505]
;B[rf]BL[596.505]LB[nc:A][kq:B]C[Why this move?
Does it attack?
Does it defend?
I'd play A for safety or B to dictate the game.]
;W[qe]WL[1175.45]
;B[nc]BL[561.733]
;W[ro]WL[1152.474]
;B[op]BL[505.225]LB[mm:A][kq:B]C[Hm, I'm not sure what this move achieves. My first feelig was to just jump out to not destroy any Aji.
A also glances at the White group above which is not totally alive yet.
You could also try to first counter-attack with B and when White jumps out you can play A or sort of to defend your goup (and keep White cut) in good style.]
;W[jq]WL[1118.384]C[Hmm, a lot of Aji there.]
;B[nq]BL[440.38]LB[lq:A]C[And now it's gone =D
I think A first could lead to some intersting variations. But of course you need to make sure that it does not harm your own group.]
;W[nr]WL[1097.695]
;B[mp]BL[417.905]
;W[lq]WL[1093.478]
;B[ln]BL[304.821]LB[mm:A][ko:B][hq:C][kr:D]C[I'd play A instictively.
This move ponders too much between the shapes at A and B, I think. So it does not really threaten White's center group nor White's lower group.
Maybe B is better here, it has the benefit of preparing C and then aiming at D to attack White's lower group.]
;W[nl]WL[1012.73]LB[de:A]C[Strike me as very slow.
A is very big.]
;B[de]BL[240.72]LB[dc:A][cj:B]C[I would have instinctively approached low to just make a base here and seperate A and B.]
;W[ce]WL[992.287]
;B[dd]BL[233.432]C[I'm not sure about the Joseki choice.]
;W[cd]WL[979.951]
;B[ec]BL[230.817]
;W[cc]WL[960.917]
;B[ef]BL[156.142]LB[df:A]C[A is more common.]
;W[cf]WL[950.682]
;B[qd]BL[131.48]TR[qd][rf]C[Hmm, EdLee would say "Broken Shape!".
Furthermore you force White to descend and then you feel forced to defend your right side group. Well... what did you achieve? After the sequence White can still hop into your corner.]
;W[re]WL[945.808]
;B[sg]BL[123.335]
;W[eb]WL[932.614]
;B[fc]BL[76.884]
;W[je]WL[922.17]
;B[ld]BL[56.026]LB[je:A][mf:C][of:B][nh:D]C[Hm, I would play bigger. Threatening to cut A and attack B.
Maybe C aiming at D or such? But I don't how fruitful this will be =D]
;W[lf]WL[914.939]
;B[kl]BL[39.39]
;W[mn]WL[895.837]
;B[mm]BL[30]OB[5]
;W[ml]WL[844.802]
;B[lm]BL[30]OB[5]
;W[lj]WL[822.866]
;B[kj]BL[30]OB[4]LB[kf:C][kh:B][cl:A]C[I feel this just helps White solidifying his center but you yourself are gaining not so much. Later you might play B aiming at C and so on.
A is the last big point.]
;W[ki]WL[818.24]
;B[lk]BL[30]OB[4]
;W[mj]WL[814.625]
;B[jo]BL[30]OB[4]C[I don't understand this move.]
;W[cn]WL[807.191]C[Big!]
;B[dn]BL[30]OB[4]LB[bo:A]C[I'd play A, I don't think you will get something from this wall.]
;W[dm]WL[795.335]
;B[en]BL[30]OB[4]LB[co:A]C[Still A for the corner : D]
;W[co]WL[793.18]
;B[cp]BL[30]OB[4]
;W[jj]WL[788.222]
;B[em]BL[30]OB[4]LB[dl:B][cm:A]C[Aji-Keshi! Important! Don't play this move, it lets White defend the cut at A.
B is a good move here to look out for.]
;W[dl]WL[785.426]
;B[el]BL[30]OB[4]
;W[he]WL[768.303]
;B[gg]BL[30]OB[4]
;W[il]WL[762.794]
;B[im]BL[30]OB[4]
;W[hl]WL[751.553]
;B[hp]BL[30]OB[4]LB[ir:A]C[A is way bigger endgame.]
;W[hm]WL[744.807]
;B[hn]BL[30]OB[4]
;W[hr]WL[720.246]
;B[ig]BL[30]OB[4]LB[id:A][rd:B][ql:C]C[A first maybe.
B might be bigger. C is also a nice Sente-sequence.]
;W[hc]WL[710.348]LB[ic:A]C[This at A is better.]
;B[fb]BL[30]OB[4]
;W[db]WL[707.22]
;B[id]BL[30]OB[4]
;W[ie]WL[703.181]
;B[hd]BL[30]OB[4]
;W[ge]WL[701.822]LB[kc:B][gd:A]C[White could play at A since Black can't cut at G15 because of B.]
;B[gd]BL[30]OB[4]
;W[fe]WL[699.689]
;B[ed]BL[30]OB[4]
;W[fg]WL[671.528]
;B[ff]BL[30]OB[4]
;W[gf]WL[668.955]
;B[fh]BL[30]OB[4]LB[dg:A][gh:B]C[Maybe force first with A? Or just play B?]
;W[eg]WL[659.568]
;B[eh]BL[30]OB[4]
;W[dg]WL[657.832]
;B[fj]BL[30]OB[4]C[You play Dame, he has defended his left side.]
;W[gh]WL[652.353]
;B[hg]BL[30]OB[4]
;W[gi]WL[648.366]
;B[ke]BL[30]OB[4]LB[hj:A]TR[gg][hg][ig]SQ[eh][fh][fj]C[I think you could play A and try to squeeze White's two stones for more liberties for your traingle marked stones. But in the end, this will cost you the rectangular marked stones and White can squeeze you to capture the white stones... soooo, I feel White gains from all this ^^]
;W[kf]WL[634.397]
;B[jf]BL[30]OB[4]
;W[jg]WL[626.811]
;B[if]BL[30]OB[4]
;W[ih]WL[625.235]
;B[jh]BL[30]OB[4]
;W[kg]WL[622.944]
;B[hh]BL[30]OB[4]
;W[ii]WL[621.048]
;B[gj]BL[30]OB[4]
;W[hi]WL[616.886]
;B[jd]BL[30]OB[4]C[Small?]
;W[rc]WL[609.678]
;B[rd]BL[30]OB[4]
;W[sd]WL[607.527]
;B[qc]BL[30]OB[4]
;W[sc]WL[602.453]
;B[bp]BL[30]OB[4]
;W[es]WL[576.217]
;B[gr]BL[30]OB[4]LB[er:A]C[A is the best way to defend here, I think.]
;W[gs]WL[558.69]
;B[ir]BL[30]OB[4]
;W[iq]WL[550.374]
;B[hq]BL[30]OB[4]
;W[hs]WL[549.005]
;B[er]BL[30]OB[4]
;W[ds]WL[545.108]
;B[fs]BL[30]OB[3]
;W[fr]WL[537.481]
;B[mr]BL[30]OB[3]
;W[oq]WL[527.873]
;B[fs]BL[30]OB[3]
;W[np]WL[512.442]
;B[is]BL[30]OB[3]
(;W[no]WL[506.435]
;B[nn]BL[30]OB[3]
;W[mo]WL[459.551]
;B[nm]BL[30]OB[3]
;W[qo]WL[449.405]
;B[pp]BL[30]OB[3]
;W[gn]WL[428.838]
;B[ho]BL[30]OB[3]
;W[jm]WL[425.939]
;B[kn]BL[30]OB[3]LB[jn:A][lo:C][jp:B]C[A or C is better shape. When White captures your stone you play B.]
;W[in]WL[422.362]
;B[io]BL[30]OB[3]LB[jp:A][kq:B]C[A to aim at B.]
;W[rp]WL[416.003]
;B[rq]BL[30]OB[3]
;W[bm]WL[390.207]
;B[gm]BL[30]OB[3]
;W[qb]WL[366.776]
;B[pb]BL[30]OB[3]
;W[ra]WL[355.87]
;B[dj]BL[30]OB[3]
;W[dk]WL[353.219]
;B[ek]BL[30]OB[3]LB[ci:A]C[If you were safely connected you could play A.
END OF COMMENTS.]
;W[di]WL[351.035]
;B[ej]BL[30]OB[3]
;W[kr]WL[339.531]
;B[ne]BL[30]OB[3]
;W[nf]WL[337.125]
;B[rl]BL[30]OB[3]
;W[rm]WL[324.147]
;B[gl]BL[30]OB[3]
;W[me]WL[294.644]
;B[md]BL[30]OB[3]
;W[pa]WL[283.708]
;B[ob]BL[30]OB[3]
;W[se]WL[224.454]
;B[sf]BL[30]OB[3]
;W[sl]WL[205.181]
;B[sk]BL[30]OB[3]
;W[sm]WL[202.405]
;B[ql]BL[30]OB[3]
;W[pl]WL[135.852]
;B[si]BL[30]OB[3]
;W[fa]WL[126.973]
;B[ga]BL[30]OB[3]
;W[ea]WL[125.275]
;B[gb]BL[30]OB[3]
;W[bo]WL[119.604]
;B[dh]BL[30]OB[3]
;W[ch]WL[111.627]
;B[ei]BL[30]OB[3]
;W[ci]WL[109.867]
;B[le]BL[30]OB[3]
;W[mf]WL[96.298]
;B[oe]BL[30]OB[3]
;W[ap]WL[78.164]
;B[aq]BL[30]OB[3]
;W[ao]WL[76.69]
;B[bq]BL[30]OB[3]
;W[do]WL[75.363]
;B[eo]BL[30]OB[3]
;W[jn]WL[68.548]
;B[jl]BL[30]OB[3]
;W[ik]WL[55.534]
;B[km]BL[30]OB[3]
;W[im]WL[52.12]
;B[mk]BL[30]OB[3]
;W[kk]WL[44.007]
;B[ll]BL[30]OB[3]
;W[ko]WL[31.414]
;B[lo]BL[30]OB[3]
;W[kp]WL[26.171])
(;W[nm]
;B[mo]
;W[nn]
;B[no]
;W[pp]LB[oo:A][qo:B]C[A and B Miai, I think.]))