First hand seems like the hard one. For me, I'd probably make a big reraise (4-bet) given the number of draws out there, but I'm really not sure what the best play is there. It`s the exact situation that I think might be the biggest leak in my game, I hope other people have something informative to post on that one.

The second hand is a call on river. You bet flop, which could easily be a standard continuation bet, then check-fold TPSK on river... I think the turn check is correct, but I`m definately calling a river bet unless villain blasts the pot, which he didn`t do here.

I`d fold the third hand, even if he puts you on big pair theres a 50-50 chance that you have the flush draw as well so hes probably not bluffing.