First download the template, you'll find that in the dashboard area under 'templates'. Follow the instructions within the PSD template. You need to submit your art on a transparent background and saved as a png. One file will work for all product items. Next go to “add new product” and upload your png file, from there you’ll add all products and fill out all fields. Follow the prompts to scale and move each file on each different product type. Hit 'Create Product' and your design will enter our system and be awaiting approval.