Repaint those areas. Sometimes it just needs more. Other times its your stroke. Make sure you keep the roller wet. That is the mistake I make and it leave marks when the roller is too dry.

Do you mean streaks or overlaps?

I painted my living room two weeks ago and I have noticed some annoying lap marks (I assume where I failed to keep a wet edge). They're not that bad, and you only notice them from certain angles, but I'd like to fix it if I can.

My first thought was to just roller over those areas with a new coat. But will that just create new lap marks?

In the alternative, I could put a new coat on the whole wall and be more careful.