Hand 1:
Bet on the turn, if he hit his 10 or has over pair he will re-raise substantially

Hand 2:
Agree with Burno, no need for an all in with 16 BBs left

Hand 3:
Very dependent on the Villian. IF he has been conservative and seems like he knows what he is doing, he recognizes your strength on the turn and wants your call. I would ahve called the river on two pair here, probably to look into an A high flush... But hey, you gotta risk it sometimes eh!