PDF Pattern Downloads

For a long time I've wanted to sell a pattern for one of my own designs but didn't know how to do this. I recently found a website providing free software that will convert a document into a PDF file. I tested it on Onika, the cowl I made for my niece and it looks great. The only problem with the free download is that it can't be used for commercial purposes. This means I'll have to buy the package which is about £22, not bad.