AQs open from BU - mistake on the turn?

Hello, for start, I don't consider myself as good player

As you mentioned, villain is probably a reg player, so he can do some thinking in the spots.

Preflop, flop, pretty standard, I play the same, but sometimes I like to bet flop anyway for straight draws to pay for the turn card.

Turn - you face a raise, combos that beat you are:

3x KQ, 3x 55, 2x Q5s. There might be alot of Qx that raise, even Q8,Q7 as there was no action on pre and flop. As you mentioned, flush draws on As (AJ, AT, A5 might raise that too).

I don't think that reraise from your side would be a good idea - you might throw away most of his draws and even some of weak queens. I'd just call here and decide on river as you have position advantage.

OTF: I generally like to cbet with rangeadvandage... but the occasional checkbehind vs. reg I can dig.

OTT: calling seems better! U induce the Bluff OTR (keep in mind that u are 4 handed) and u can even fold with scary River.

I like the way you played it so far.