Can be of anything, every added character is an extra point.
A simple lineart with a white background, every added character is plus 5 points.
Simple color, no shading or background plus 5 points for each added character
Simple background, if wanted, and shading, plus 10 points for each character
Lineless drawings with complex backgrounds and lighting, plus 20 for each character
Not too great at animation yet, can do this kind of animation well. Plus 25 for each character