Created in Clip Studio Paint Pro on my Surface Pro 4. Instead of a rough chalk sketch I started off with one of the 3d posable models in Clip Studio since Ms. Martian costume pretty much looks like a Japanese schoolgirl.
Here's the process GIF:
And a B&W version:
Posted from my blog with SteemPress : http://mccomics.mattslawblog.com/2020/11/28/ms-martian-quickpaint/