hey guys. first post, im going to give this a shot. hope this hand isn't too lame.

1/2 NL $100 max, seneca niagara
this is my fourth hand at the table. i of course have $100. villian has about $275, two stacks with a couple greens on top. i just sat down, no reads on this villian, the dealer blocks my view (he is in seat 1, i am in seat 9)

i am UTG with KdKc and raise to $8
Villian reraises to $20
i call

flop Q93 all diamonds. check, check.
turn is a blank, i bet $40, call
river As, check check.

horrible? if i put him on AA or QQ can i bet this flop? what's my line if the river is the 2c? thanks guys.