One thing I can't stand is when someone raises on one street, then checks the next. If you check raise the flop, this is a way of teling your opponent that you have something big (or it's a bluff). Since you check raised, take control of the pot and bet out the turn!

Don't check raise one street then check the next, unless you are playing some tricky shit against a player that has reads on you and you plan on mind fucking him.