¿Qué idea tienes, qué estilo te gusta para tu t-shirt?
The important thing is that the shirt is wearable without being too tacky. If it looks like something off of threadless or shirt.woot that would be perfect.
Preferred design patterns would be either friendly cartoons or subtle black.
General context about minecraft can be found at http://www.minecraft.net/
This t-shirt is designed to be a gift to players of the Apocoplay Minecraft server.
Design is rather open ended, so long as there is something at least subtle showing it's an ad for the Apocoplay Minecraft Server, all is good.
If an idea is needed, one of the unique features of the server are the pig races - where players ride on pigs (sometimes backwards) around a player made racetrack, so a cartoon minecraft character riding a pig on a racetrack backwards could work.