With my new found hobby of Tshirt making, I've been looking for a way to step up my skills in order to make vector graphics so I can make my designs more flexible for the spreadshirt designer. By having my images vectorized, customers would be able to choose their own image size, placement, and color. Spreadshirt also offers different shirts from various producers and a multitude of colors unlike our old friends at cafepress. Here's some cool Illustrator Tutorials.