I made this recently and I’m sad looking at it because the blue washed out. I don’t use permanent dye so it always washes out much faster than I want it too. Anyways this drawing was magestical and it took about two hours!
I drew this on Autodesk Sketchbook and the blending brush I used was the Smudge flat brush 3 at the 0% opacity (it takes a while but the results are pretty cool. Tell me if you want me to drop a tutorial and mayhaps I will.