You own it! We will never claim ownership of a design you create or upload to our site, and that includes the templates that we have all set up for you!
In regards to the work we do for you through our Design Request Form, that is also yours too! We are glad to help out with designs and changing artwork, and even some extensive work too. We ask that you not abuse this system though, or we may need to charge for further work done. In most cases, this is not what happens and we are happy to help!
So get out there and start designing!