Making 2d ink characters animations

I want to make a 2d character made of ink and looks like a drawing. Basically how I imagine the character should look like it was drawn by pencil and there should be movement to the ink nonestop (also at idle). Like hair moving or even the outlines of the characters moving like fluids on the edges. I have no idea where to begin doing that and I never seen actual graphics in any game.

Any help is appreciated !