I was asked to do a tutorial on coloring dark skin with Copic markers not too long ago. You only need 3 markers, 4 at the most, and it's fairly easy. I hope
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【PREMIUM ALCOHOL-BASED MARKERS MADE IN JAPAN】A fast-drying, transparent alcohol ink will not harm the surface or fibers in the paper allowing it to
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The most popular Copic marker - Copic Sketch - COPIC Official Website
Coloring Stamped Images with Alcohol Based Markers!