Well some people in stardoll break this rules, which Ghosty personally thinks, CAN'T BE BROKEN unless you want to look more or less like a clown. :/
1. Never mix shiny colors. Or this will happen:
2. Never use dark eyeshadow and dark lipgloss, you will look ridiculous.
3. Don't fulfill the whole eye with 1 color, specially if its a dark color.
~Ghost of Chocolate