Yeah I was going to use a mix between clients and a colleague as references, I have more than the required projects, months, and hours. As far as proof goes, we didn't formally log our hours, however our names are in the credits on the product(s) itself, and my business has been listed in various media articles praising some of the projects I have managed. I have contracts signed by our clients and myself proving they agreed to the project development, is that enough proof?