Acrylic paint on resin. I think I used at least 10+ layers for each cup. The actual painting time is not much, just the drying time takes forever.( You should plan ahead with multiple drawing together to save some resin.
Here are some close up photo:
Pencilkiller 
wow…amazing!
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I’ve never thought of painting something like that. Kind of reminds me of when Maxfield Parrish would paint isolated transparent layers between layers of varnish. 🙂
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