- Colour something entirely in cel-shade style
- Draw something in some perspective
- Produce an artwork where the main focus is the background, not the people/things
- Produce something with a very limited palette [3 colours max]
- Draw something REALLY dark… and bloody
- Produce an artwork using only bright colours
- Draw something dynamic
- Draw someone in a really interesting pose
- Draw an interesting scene
- Draw people interacting [minimum of 3 people]
- Draw animals
- Produce an artwork using no holding lines.
- Draw a battle scene
- Draw something dramatic
- Draw pr0n
- Position the light source differently
- Use different coloured light

Credit to: Mizumi @ mangabullet.