If I'm wearing eyeliner, I wear it just on the bottom. If I do the top it makes me look like I put too much makeup on, like I'm trying to be a rocker chick. Normally I leave the eyeliner alone though.
TBH I get away with just concealer, powder, and usually some lip gloss. All I'm wearing in my avatar is concealer, powder, and some eyeliner on my bottom lid. Natural is totally in atm.