These designs have been created for for fundraising to cover scoliosis surgery or related travel costs. They are free for PERSONAL use. (Even though they are here for your use, all copyright is retained by me). I have uploaded all files into my dropbox. Every design should be available with a transparent background (png) and a PDF "vector" file (for professional printers). If you have any problems downloading them, please contact me via email.
For fundraising purposes, I highly recommend Bonfire. I have used them professionally and for fundraisers. You pick the shirts you want to sell, upload an image (like the ones attached here or create your own), and add any personalization you'd like right on their site. You choose how long the sale is open, then share with friends and family. Bonfire prints the shirts, sends them directly to the supporters, and you are able to collect the profits. On average, I have found that the profit is around $8-9 a shirt. If you sign up through my affiliate link, you will receive an extra dollar per shirt sold (up to $100).