Is this a good c-bet? NL10

[TheyCallMeDonk]

Full Tilt Poker - No Limit Hold'em Cash Game - $0.05/$0.10 Blinds - 4 Players - (LegoPoker HH Converter (http://www.legopoker.com/hh))

SB: $18.05
<font color="black">Hero (BB): $10</font>
UTG: $2.35
BTN: $4.10

<font color="black">Preflop:</font> Hero is dealt 5/images/graemlins/diamond.gif 5/images/graemlins/heart.gif (4 Players)
UTG folds, BTN calls $0.10, SB calls $0.05, <font color="red">Hero raises to $0.50</font>, BTN calls $0.40, SB calls $0.40

<font color="black">Flop:</font> ($1.50) A/images/graemlins/club.gif 8/images/graemlins/spade.gif 3/images/graemlins/club.gif (3 Players)
SB checks, <font color="red">Hero bets $1.20</font>,

Im kinda trying to learn when to c-bet and when to not do it,

Here is my thoughts, im representing a good hand since I'm raising over limper's in SB and should get some respect, or is this stupid at NL 10?

[losingdonkey]

looks fine. I make mine anywhere between 3/4 - full pot

[bozzer]

this is getting towards boarderline, but i cbet here.