Edit purchased faces

It would be great if you could edit a purchased watch face. For example add a complication or whatever is needed. I understand people don't want their work messed with. Although, if you could somehow enable editing and disable publishing. This way the buyer can edit their paid face and only that person who purchased the face can apply it to their watch. This way the market isn't flooded with copies of paid watches for free. Just an idea. Or at least let us know in the description that you're unable to edit that specific face.