Getting raised on paired flop

[Kevan0]

Hand 1:
Raise more preflop, don't let him openlimp from the CO.

Hand 2:
Well played. He is probably on a flushdraw here. But here come in reads if you have any. Betting out the blank is good. (edit) Turn is a blank, so it would not have helped him. Why even bothering calling the flop, betting out if you plan on folding to a raise?

General:
Try to keep your cbets the same size so opponents can't pick up on that. You don't want someone to find out for instance that you bet full pot if you hit and half pot if you missed (tough this is an extreme example).