[jrz1972]

Hand 1 is fine. You could dump this in a multiway pot, but once its HU I think you need to get this to showdown.

Hand 2: I lead the flop and keep leading until somebody raises. The way you played it I lead the river. I'm not sure what you were trying to do on the flop.

Hand 3: Open-limping on the button is awful. I don't want to be overly harsh because I know you're looking for constructive criticism and you know you made a mistake, but it really is pretty much a cardinal sin. Never do this. Post-flop, jam the hell out of every street, starting with the flop.