Here are some points you should always consider when you start to design stuff. Some of these really apply for all, like light, color and perspective.
If you come up with more, feel free to add them.
Character design
- profession or title
- social rank
- physical condition
- mental condition
- background
- culture
- environment
- size
Creature design
- environment
- carnivore, herbivore or omnivore
- how gets food/catches prey
- reproduction
- size
Environment design
- history
- main materials
- climate
- feeling/mood/atmosphere
- scale
Industrial design
- purpose of the object
- powersource and material it uses as energy
- technology
- user interaction
- price
- unique or for reproduction
- size
Storytelling/ Narrative
- composition
- perspective
- relation between shapes
- focal point
- scale
- colour contrast
- what's happening: who, when, where and how?
- emotion in the picture = faces + body language
- light
