Post flop looks fine. Pre flop I'd just fold this or 3bet as a bluff (prob folding) QJ does not really play that well, it looks nice but going to be very hard to know where we are on Jxx or Qxx flops as our kicker is meh.

Pre flop I probably muck this vs an UTG opener but it's definitely close.

Post flop my standard line is to call on this type of flop but with villain betting so small the raise is definitely a viable option. If villain had gone 50-75% with his bet I would lean towards a call. Turn then is an easy value bet when we improve as we take the lead vs all his Qx and we want to charge the possible flush draws villain may show up with.

River then is obviously a pretty awful card for our hand, betting here doesn't make much sense at all so happily checking this down when given the opportunity. It would be an interesting and pretty tough spot if villain donks out into us on the river.

Pre flop is a fold unless you're up against a noted loose bad player. I'm 3 bet bluffing KQ AJ MP vs UTG as even those hands can cause you trouble against a tight opening range. QJs is going to be a nightmare with kicker problems.

As played I like your post flop line. Not sure about the thin value raise on the flop though,maybe calling could be better if we're way ahead way behind.