Once you click the "Gang Sheet" you can see  "Images"

Click "Upload Images" to opload desired images you wish to make avaliable to customers

You have the option to search for "All", "Active" or "Inactive" images

"Actions" allows you to "Set as Bestseller", "Drop BestSeller", "Add Tags", "Remove Tags", "Activate", "Inactive", "Delete Images", and "Delete Tags"

"Sort" allows you reorganize images accordingly

You can use "Search Images..." field to find images

You can also search for designs through "Tags"

Image Gallery Tab: How to Find Design You've Created