Here's what you need to get started:
- T-shirt design, which should be a .png, .tiff, or .psd at least 300 dpi at the dimensions you'd like it to appear on the shirt.
- How many shirts you want to sell (you'll have a 30-day window to reach your goal in order for the shirts to actually be made, and the higher the number, the lower the base price of the shirt)
- Where you want the proceeds (if any) from your campaign to go. You can sell the shirt at cost or raise the price to be able to earn money for yourself or donate funds to any cause or person you desire.