tSR Clothing

[Vipershark]

Basically, any complete designs can be sent on a PDF document with 300 DPI, and between 8-10" wide. Most t-shirts have an 8" design print, for example, the infamous 1up shirt, and the Goomba "you lose" shirt. Both are 8" wide.
Height, I work with usually going for about 11" high maximum.

Send me a PDF with your design at the size you want it to be on that document, if you can, have each colour a separate layer.
It makes printing a lot easier.
Edited first post with more details.

what I'm saying is
how big would this be on the pixel shirt
can you like
make a rectangle on it or something to show the limits of where we can put stuff in