* Customize your URL: on the product page, it gives you a number URL as default, or you can type in what you want after your Gumroad store url.

For example: www.jrheimbigner.gurmroad.com/(customize this part)

* Canva (A web app, Canva.com): You can plug in the pixel amount into the general design template. Then you can design yourself or use one of the templates that are on Canva. You can do this for free with the resources.

I suppose I could have elaborated more. Sorry about that.