Designs/products in Showroom

Hi,
I’m a newbie here, so apologies if this appears daft. I have created and opened my shop (Stravaigin), uploaded designs to the marketplace, but cannot see how to load images or products into my showroom.
Thanks for any advice.

Stravaigin

Since you are new, your designs go straight to review. Once you are here a while you are granted more trust and the review still happens but the designs are published right away. For the time being you need to exercise patience for your designs to pass he review successfully which can take up to ten days. Once they are approved they’ll appear in the showroom automatically.