Live $3/5 hand from yesterday that I know I misplayed and want some feedback on:

effective stack: $1500

K♠K♣ in SB

UTG +1 raises to $15 and two call, then I raise to $60, which IMO was my first mistake- should have sized up to ~$100 to thin the field a bit more. Once the EP called the others were more likely to join in, and by the time it got to the button he only needed to call $45 with $180 in the pot.

$245 pot pre-flop

• J♣T♠6♠ and I check- 2nd mistake. With a connected board like that I just didn't have a good sizing in mind to c-bet and feared getting check-raised and folding. It was checked to the button and he bet $150. I thought I recognized him as an aggressive player, but wasn't sure. I made the call and the other two folded.

$545 pot

• 9♠ turn. I check and he bets $325, I fold. At that point it felt like a flopped set or two pair, and I didn't like not having the nut flush draw (I later learned from another player that he had folded the A♠).

I appreciate any comments on how I could have played this differently.