If you have permission to upload your own photos to the gallery, you will see the My Photos upload option at the bottom of your gallery.

Depending on your photographer's galleries, you may have the option to upload photos to the gallery. To begin, navigate to the My Photos section of the gallery (this is near the bottom of the gallery) and click Upload to begin uploading your own images. This will create a My Photos scene at the bottom of the gallery.

Depending on your photographer's galleries, you may have the option to use your own uploaded images to purchase products in the store. To begin, in any product editor in the shop, click My Photos to begin uploading your images. Then click on the image from the photo tray to add it to the product.