Heh, my first game of the tournament went rather better
.6: It's not bad, but just FYI this knight's move is considered a bit of an old joseki that is not so popular these days as it is slack territorially. I would r5 attachment or play some pincer depending on mood.
22: Could c3. It's very big (points and base for both sides), and k4 means if he plays 3-3 then you can no longer play j3 comfortably. You could answer it at h3 or h4 which does put some pressure on his k4 stone, but also the white group is a bit cramped so it's difficult and fighting. 3-3 now is simple and easy and good. Maybe h4 is also possible to pressure his k4. In fact as black I would not have k4 but just 3-3 and allow white to make some territory on the lower side: it's nothing special as j3 can be reduced at k4 later, and if white answered c3 at h4 there is an invasion at k3 for later.
24: I might tenuki. c3 (not so much of a tenuki as it is related to the strength of k4) or c12.
30: f2 ok.
32: Ewwwwwwwwwwww! Tiny move. Black's previous move didn't defend at g4 so you could cut there, though I'm not sure it will be particularly profitable so maybe best to aim for it later (e.g. if you got m6 it would be a more powerful cut).
35: This is funny from black, 4th line would be natural. Note that the top left corner is still open, invading there is very big (30pts+) though could damage your top side a bit. In this kind of shape it would be common for black to exchange e17 for f18 to patch the corner a little.
36: Seems ok.
40: This is a game-deciding decision. This is a perfect time to count, did you? If you play a reduction like this he will trash your own moyo. If you hadn't exchanged l3 for g4 then reduction moves like this would aim at the g4 cut and actually have some attacking power, as it is it is just a limp dame move that feels like making a weak group, hurting your own moyo. My feeling without counting (I don't think the game is hopeless for white) is this is the losing move and you should simply have either answered at g11 or h12 to mutually build moyos, or else do something in either of the top corners as they are the biggest area other than the centre boundary.
the left side is critical. The bottom side is not so large, because of the solid group in the bottom right corner. You do not mind if Black approaches it. Black's two stones in the top left corner, however, are vulnerable. That should make your mouth water. I showed a number of possibilities for that move, but for you I would strongly suggest the small knight's approach. Yes, it is open to a pincer, but it gives Black problems. 
is another play that says, You go your way, I'll go mine. The trouble is, Black gets to Scotland afore ye.
. I think that White is behind, but not so badly behind in terms of the score for a kyu level game, in general. The trouble is, Black's positions are solid. That makes it hard to catch up.
looks like one of those plays on the frontier of frameworks, that are so big. The trouble is, it finally solidifies Black's two weak stones. White now has little play. Better to invade or reduce, as I indicate.
I don't always play this way, and all the games at my club are played with handicaps, one way or the other. I was lucky enough to have Michael Redmond 9p comment on two of my games when he visited the UK recently: in one of those games, I played the low 1-point pincer in reply to the 1-point high approach, and it led to a big fight that both players messed up. Redmond Sensei commented that weak players should not try to play complex joseki because one side or the other will always go wrong. I agreed with the premise, if not the conclusion, but decided to try following the advice anyway. Perhaps I interpreted it too literally. (A separate post on Michael Redmond's visit is in preparation.)