For more advanced users, you can select the size of your export to fit perfectly the requirements of your destination platform.
-On the Discover page, scroll left to the end of the Create category
-Pick Blank
-Enter the desired size, width, and height in pixels
It will create the canvas of the desired size that you can then export.
To list a few, here are the optimal size for famous platforms
eBay, is 1600x1600 pixels
Etsy, the recommended size is 2000x2000 pixels for listings, 500 x 500pixels for your seller photo.
Poshmark uses square photos. We recommend using 1080x1080px
Depop uses square photos. We recommend using 1280x1280