Hi glacier,
Welcome.

S6.

You save a useless stone. Much better to atari at R8.

You allow this huge move because of your mistake at

.

P7.

Tenuki is good; taking the last open corner is good.
However, (more advanced) M3 is also very good -- attack W's weak group there.

This move makes almost no sense.
Look at all the White stones on the right -- What are you trying to do with this move?
W has the option to cut -- but maybe your

stone is too small -- W may just tenuki.

,

These two moves are ridiculous.

Mistake.

W's moves are not good. At least R12.

Soft. Hane P11.

Wrong direction. J17. You want to push

toward your Power -- your Wall.
You profit on the LEFT. Your Wall is NOT for making territory directly.
Use your Wall to attack.

This move is unbearable.

Locally, M17.
Globally, tenuki. Example: M3. ( See

).

This move is
worse than Pass. You removed 1 point from yourself
for no reason !
Verify for yourself there's nothing White can do there locally. See

.

K13.

No fighting spirit. N11.

Bad shape for yourself (hitting yourself on the head); wrong idea.

Unbearable.

See

. Locally, at least N9.

Unbearable.

glacier, The empty triangle is
not always bad:
- Click Here To Show Diagram Code
[go]$$B
$$ . . . . . . . . .
$$ . . . . . . . . .
$$ . . . X X . . . .
$$ . . . X . . . . .
$$ . . . . . . . . .
$$ . . . . . . . . .[/go]
However,

,

,

are ALL bad.

107 Pass.

109 Counter-atari H11. Your K11 stone is useless (not important at all) !

102 and

112 are both bad empty triangles.

145 Bad empty triangle. S2.

155,

157 -- You missed a nice combination here.
After

155, Can see you see how you can capture 2 White stones here ?