1. Must include a triangle
2. Make more then one. (you can interpret what that means) 
3. Include something that appears to be upside-down.
4. Have unusual shading. (Or do shading in a different way then you normally would.)
5. Keep the main subject on the top half of the canvas
6. Use this Palette: https://lospec.com/palette-list/ty-haunted-mansion-10
7 .Make the perspective unusual
8. Incorporate some architecture
9 .Use this pallet: https://lospec.com/palette-list/droplets
10. Hide an Easter egg in the piece.
11. Break a rule
12. Use a color you hate
13. Use this pallet: https://lospec.com/palette-list/journey
14. Include a long diagonal line
15. Must include something living
16. Make it Isometric
17. Blue must be the main color
18. Outlines or silhouettes only
19. Draw in a style you've never used before
20. Use this pallet: https://lospec.com/palette-list/ennis-blade
21. Look up a composition method you've never used before and follow it.
22. Make your scene mostly empty (lots of white/negative space)
23. Make it sparkle
24. Use this pallet: https://lospec.com/palette-list/waldgeist
25. Draw it like a poster
26. Include high contrast throughout the piece
27. Make the canvas ratio particularly unusual
28. POV
29. Have the main subject hard to see
30. 1-bit
31. Make the environment not include the ground or any typical floor