Something I did with my Copics that Laura Martin told me she thought was a cool idea - I printed out my Copic color chart on Strathmore (so, what I’d normally be coloring on) and colored the appropriate color block in so I’d know what the color looked like once dry and everything. You’d have that page of swatches, if you will, and you wouldn’t need to do scribble tests for base colors, ya know?
