I've only had luck with foiling very light colors, and I agree that practice makes perfect with this technique. I usually apply shadows dry though, but will wet line (or foil, I guess) liners a lot.
To be honest, though, it took over a year before I felt confident wetlining!
__________________ "If you want to criticize my methods, fine. But you can keep your snide remarks to yourself. And while you're at it, don't criticize my methods." Rupert Giles, BtVS
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