Too passive post-flop?

[TKWest]

I think I am being too passive post-flop and it is costing me money. I am either missing out on value bets or letting opponents outdraw me cheaply.

Villain is mouse 19/0/0 after 51 hands

PokerStars 0.50/1.00 Hold'em (9 handed) FTR converter on zerodivide.cx

Preflop: Hero is BB with T[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls, <font color="#666666">3 folds</font>, CO calls, Button calls, SB completes, <font color="#CC3333">Hero raises</font>, UTG+1 calls, CO calls, Button calls, SB calls.

Flop: (10 SB) 3[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, Hero checks, UTG+1 checks, CO checks, Button checks.

A flop bet here might have got a mouse to fold. A raise or even a call might tell me that someone has an A. With everybody checking I dont know where I stand. Someone might be slow-playing.



Turn: (5 BB) Q[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, UTG+1 folds, CO folds, Button folds, SB calls.

River: (7 BB) 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, Hero bets, SB calls.