Help me! (two hands I completely butchered)

[Walker]

Party Poker 0.5/1 Hold'em (10 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Preflop: Hero is MP3 with T/images/graemlins/heart.gif, A/images/graemlins/club.gif.
<font color="#666666">5 folds</font>, <font color="#CC3333">Hero raises</font>, CO calls, <font color="#666666">3 folds</font>.

Flop: (5.50 SB) 3/images/graemlins/spade.gif, 4/images/graemlins/diamond.gif, J/images/graemlins/club.gif <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, CO calls.

Turn: (3.75 BB) 5/images/graemlins/spade.gif <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, CO calls.

River: (5.75 BB) 8/images/graemlins/spade.gif <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">CO raises</font>, Hero folds

Final Pot: 9.75 BB

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Party Poker 0.5/1 Hold'em (9 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Preflop: Hero is MP3 with J/images/graemlins/diamond.gif, J/images/graemlins/spade.gif.
<font color="#666666">2 folds</font>, MP1 calls, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">3 folds</font>, BB calls, MP1 folds.

Flop: (5.50 SB) T/images/graemlins/spade.gif, A/images/graemlins/club.gif, 6/images/graemlins/diamond.gif <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets</font>, <font color="#CC3333">Hero raises</font>, BB calls.

Turn: (4.75 BB) 4/images/graemlins/spade.gif <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets</font>, Hero folds.

Final Pot: 5.75 BB

[imported_AAcheckraise]

first hand...

why do you bet after he calls flop, check/fold the turn and river

[Expert Hold'Em]

first hand you definately need to check/fold the river.

i like how you played the second hand. you can probably fold the turn safely.

[2+2 wannabe]

hand 1 - i'd bet the turn against typical villain, and check/fold the river

hand 2 - i think it's fine - not fun but i'd play it the same way

[Spaderess]

Unless you have a read on the villan I might call down hand 2.