Let's take a peek at the six sections of PMC. An experienced member most likely knows them by heart, but for the newer guys and gals, they are: Projects, Texture Packs, Skins, Servers, Blogs, and Mods. Let's take a look at the qualities of a member who would most likely make a nice sample of that category.

Projects--
-Good Spatial Reasoning
-Interior Design Knowledge
-Computing Skill (Redstone contraptions)

Texture Packs--
-Artistry
-Lots of time to use on it

Skins--
-Artistry

Servers--
-Experience and knowledge of servers
-Orginization
-Advertising skills

Blogs--
-Good knowledge of MineCraft
-Self-confidence (to defend your argument and fend off the trolls)
-Writing skills
-A good awareness on the other PMC categories
-Knowledge of current events (on PMC or otherwise)

Mods--
-Programming skills
-Lots of time
-Patience
-Artistry (for making items/blocks)

Let's look at all the categories in which a computer-artist would excel in. We see Texture Packs, Skins, Mods, and Projects. If you'd like to count Writing Skills as art, then add Blogs to the list. It is know easy to see that members who would do well in an art class may have an advantage at leveling up in PMC. Thanks for reading this! :D