I suck at playing overcards.

[Yerma]

I have an idea you can try. When you make your continuation bet on the flop and get called by 1 player who has position on you, try this: If you have a hand, often check-raise or check-call the turn. If you have no hand, often check-fold instead of betting again.

For instance, if you have AQ and the flop comes KQ2 and you bet the flop and get one caller who has position on you, sometimes just check-call the turn. You can check-call the river too (or just bet if you hit). A cool thing that this sets up is that sometimes you check the turn and he checks it back. Now you can bet the river with your mediocre hand and he won't believe you have anything, so you get paid off by weak A-high pretty often. And since it's heads-up and you often have a pair, you're not too worried about giving the free card since only one person can draw out on you and he won't often take the free card you give anyways.

If you have top pair with a reasonable kicker in the same situation, check-raise the turn instead.

Give this a try.