Party Poker
No Limit Holdem Ring game
Blinds: $0.10/$0.25
10 players
Converter

Stack sizes:
UTG: $58.37
UTG+1: $41.30
UTG+2: $25.69
MP1: $25
MP2: $14.15
MP3: $23.25
CO: $19.10
Button: $32.40
SB: $26.90
Hero: $21.90

Pre-flop: (10 players) Hero is BB with
UTG calls, 7 folds, SB calls, Hero raises to $0.75, UTG calls, SB folds.

Flop: ($1.75, 2 players)
Hero bets $1.5, UTG raises to $3, Hero calls.

Turn: ($7.75, 2 players)
Hero bets $7, UTG calls.

River: ($21.75, 2 players)
Hero is all-in $11.15, UTG calls.

Results:
Final pot: $44.05

I think my big errors were:
1- pre flop bet was too small
2- should have checked the turn after he showed strength on the flop
3- should have checked/folded the river

what do you think?