Designs for 20 T-shirts

We're looking for a star t-shirt designer to work with over the next week. Here're the specs: - We'll give you a slogan. Something like "We code for coffee", along with the targeted niche (in this case people who are programmers). - Then you make an awesome design with 1 or 2 colors. You can use any of the colors found on Teespring.com. Click get started and then check the swatch: [login to view URL] - BONUS POINTS: if you can create a cool looking design like this: [login to view URL] PAY RATE: Max of $250 per week (5 days). That would average to about $12.5 per design. DELIVERABLES: - 4-6 text based designs per day or 4-5 graphic designs per day - Teespring/print-ready vector-based EPS tshirts as well as PNG files. AI or PSD files would be helpful as well