Right now it looks that in order to create a new sticker you should go back and fourth to the window. I suggest to add “+” icon to a corner of a sticker. When your click is on the sticker, it should show the plus sign icon. When you click on + it will generate a new sticker, very similar to the sticker it is generated from. The color, size, … will be similar to the one it is originated from.
This could be extended to other features to facilitate new item creation.
