I wanted to up my game and decided to do all of Cell’s forms in one project. If I remember correctly it took me a few days just to get all of the line work done.
The really fun thing for me here was experimenting with different colloring methods for all three. For imperfect and semi-perfect (right and left respectively) I used different blending techniques. For perfect cell (middle) I maintained the traditional coloring technique composing of straight lines and hard edges to the different colors.