NL10 Top two on dangerous board.

[In the Zone]

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Absolute NL Hold'em Ring - 0.05/0.10
Blinds (6 handed)

Starting Stacks
Seat 1: Small blind ($3.80)
Seat 2: Big blind (Hero) ($20.75)
Seat 3: UTG ($18.50)
Seat 4: LP ($19.90)
Seat 5: CO ($34.55)
Seat 6: Button ($17.70)

Preflop: Hero is Big blind with Q/images/graemlins/club.gif, K/images/graemlins/club.gif.
<font color="#666666">1 fold</font>, LP calls ($0.10), CO calls ($0.10), <font color="#666666">1 fold</font>, Small blind calls ($0.05), Hero raises ($0.70), <font color="#666666">1 fold</font>, CO calls ($0.60), Small blind folds

Flop: ($1.65) Q/images/graemlins/diamond.gif, 4/images/graemlins/diamond.gif, T/images/graemlins/heart.gif <font color="#0000FF">(2 players)</font>
Hero bets ($1.20), CO calls ($1.20)

Turn: ($4.05) K/images/graemlins/heart.gif <font color="#0000FF">(2 players)</font>
Hero bets ($3), CO calls ($3)

River: ($10.05) 8/images/graemlins/heart.gif <font color="#0000FF">(2 players)</font>
Hero checks, CO all-in ($29.65), Hero folds

Final Pot: $9.5

Results below:

Outcome: CO wins $9.50

I've been playing without PAHUD so I can try and develop reads without its help. Just sat down nothing crazy happened yet.

How did I play this? Is this standard?