As a birthday present, my sister gave me a couple angel nightlights and some paint.
These are pretty creepy on their own.
I initially painted them gray, but they didn't look right. I went over them with a brownish black, making sure to get all the cracks. Then I went back over them with the gray, using a large brush so I would miss the cracks and they would look aged and dirty. Pretty much perfect.
Don't even blink.
Blink and you're dead.
Don't turn your back.
Don't look away.
And don't blink.