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I post this first because it’s the hardest and the one I like the least. This is why I have so few and crappy photos :P.
You can apply the eyeshadow with a wet brush but I don’t like it because it’s harder to blend.
Speaking of blending: be careful at the white-red and red-blue borders because it can turn in pink, respectively purple. If it happens pat some more eyeshadow on top with a fluffy brush so you don’t have to blend that much.
Don’t forget to take your time!