Hi Arts Folks,
Wilcom, just released a cool info graphic for placement of art on shirts and apparel. It is free to download and the info is formatted in a very simple and strait forward way. If you ever wanted to know where you should put graphics on a shirt or jacket, these are the guide lines.
Link to download: http://www2.wilcom.com/EmbroideryPlacement
If you are wondering who is Wilcom? They are the company that produce the Embroidery Studio suite of software that I use at my office for digitizing. In my opinion, the best software on the market, but it is pricey. They often offer free videos talking about digitizing.