The skill used to create any form of fine art - sculpture, painting, etc. Performances such as singing/dancing/acting use the 'performance' skill.
0: Other people reassure you that your stick figures are actually quite good. To be nice.
1: You have basic instruction in an artform. Pretentious people will read more into it than is there.
2: Pretentious people would start to be right.
3: Even common laypeople can start to see that you have real talent at your artform.
4: Other artists come to you for advice, and ask questions no one else would understand.
5: Your art is showcased throughout Arvum, knowledge of it is a matter of refinement.
6: Whether life imitates art or vice versa is blurry where you're concerned.