Good board textures to double barrell OOP?

DOHHHHHHH

After 5 years of playing poker, 2 weeks ago I learnt what a good board to continuation bet is

So when I c bet, and get called, what am I looking for on the turn to be able to bet again - in terms of board texture???

If you ignore reads, and player tendancies for now, is it generally a good thing to double barell overcards? Scary straightening cards? I the flush draw gets there?

I'm sure alot of players feel they get floated alot when really, the guy has "just hit" this time.

Any advice?

I've put a hand below, I think I should just give up on the turn, but are there any turn cards you would bet as a bluff????

Player	Action	Cards	Amount	Pot	Balance
DOHHHHHHH	Small blind		£0.15	£0.15	£30.15
Liberachi7	Big blind		£0.30	£0.45	£34.04
	Your hole cards	A 9
jogar123	Fold
i_amquacky	Fold
stanley644	Fold
DOHHHHHHH	Raise		£0.75	£1.20	£29.40
Liberachi7	Call		£0.60	£1.80	£33.44
Flop
		10 3 5
DOHHHHHHH	Bet		£1.35	£3.15	£28.05
Liberachi7	Call		£1.35	£4.50	£32.09
Turn
		8
DOHHHHHHH	Bet		£3.30	£7.80	£24.75
Liberachi7