I use Copic Ciao markers and Letraset Promarkers.

Current wip. It’s now being colored with my brand new copic markers, which is actually the very first time I use them, so I figured I’d scan the lines in case I mess up. Plus I can try coloring it digitally later on!
I wouldn’t mind if someone wants to color it though, as long as you credit me. Just get in touch if you want a bigger version without the tag. And I’d love to see the result as well :)