Hand1
Flop is good. Turn is ok too I guess - you don't want to scare Jx out of the hand. Why do you check the river?
As played I don't like it but I'm calling, because you're showing weakness by checking and if I'm the villain and I called you down with 78 or something like that, I'm trying to take the pot away from you in this spot. He might also have a J or Q not knowing when not to value bet.

Hand2
Reraise on the flop. I would make it 50c
Raise turn.
As played: fold on the river. This line is usually a strong hand.