The website should be fairly easy to navigate, but here's a little overview for new-comers! http://i.imgur.com/kqlAbrY.png
Here is a copy of the email sent out to announce the design contest. It has most of the details you might need: http://bit.ly/1Fy9JPr.
Voat.co is the best place to really discuss Shirtwascash stuff right now, here's a link to this contest's post: https://voat.co/v/shirtwascash/comments/111758. I have included all of the information (plus some more) from the email.
Ok sounds good
Filesize is too big
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