I think so; designs usually start out as sketches or full drawings. I don't know, though.
EDIT: Oh, and thanks guys. Since I was new to the site I didn't think no one would care what I thought about big things like this. Anyway, here are some of my ideas:
Weapons - Things like Pule Rifles, Grenades, Plasma Caster, Acid (shooting out from mouth) or anything like that could be used for attack or defense upgrades. Small-time weapons (like a grenade) would be used as a one-turn upgrade to attack. Big-time weapons (Plasma Caster, Pulse-Rifle) would be used [every turn] until somethin' happens to it, and stuff like that.
Other upgrade cards - Things like an Exo-suit (if you don't want it to be a regular character card) could be used to upgrade both attack and defense highly but not too ridiculously, and could be used until its own defense would be killed (or destroyed, if you will).
Stuff like Resin could be used as big-time defense. Stuff like the cloak could lower accuracy of attack. I dont' know. Whatever you feel like it should do.
The card's names could be bolded, or something. I don't know, I don't have an actual-design one, so I wouldn't know that stuff.
Stragety - All up to you (mainly because I got nothin').
"To me, everyone is crazy. The ones in the Mental House just got caught."