[Niwa]

I have no information at all about the players.

Villain has me covered and the Smallstack has 25xBB.
Hero: ~100xBB

Im first to act as I am
in BB. Villain is between smallstack and I.

I get 4 [img]/images/graemlins/spade.gif[/img] 4 [img]/images/graemlins/diamond.gif[/img]

Flop is: A [img]/images/graemlins/diamond.gif[/img] 3 [img]/images/graemlins/club.gif[/img] 4 [img]/images/graemlins/club.gif[/img]
Hero checks, Villain bets pot 6xBB, Smallstack calls, Hero calls.

Turn: 3 [img]/images/graemlins/spade.gif[/img]
Hero checks, Villain bets 15xBB, Smallstack folds, Hero [img]/images/graemlins/confused.gif[/img]

I know I shouldve raised the flop but how much?
I figured the flopraise shouldve made me more money and a better line.
But as I smoothcalled what is my line on turn?