Need sprites

Arcade Help
1

I need a 8x8 character sprite for my game, It will be a 2d platformer and will look like this:
arcade-Untitled (1)

2

any guidelines on character, humanoid, stick figure, certain colors etc.?

3

human

4

8x8 is a little tight of a space, could i use scaling extension on sprite?

5

8x16 would also work (going a little over is fine)