Right, I'm not gonna lie, I've really f**ked up.
Upon reinstalling my Mac, I backed up all my important data, music, photos, documents, you know there score. Well basically, the files I for this were stored under Photos, and where I backed photos upto, seems to have vanished! Off the face of the planet, I do not know why, where, when or how, but it's gone. As a result, all the work I'd put into the template for the side on sticker design has gone.
Now I know there are jpeg versions here, but they are limited in size and I don't have the layers like I did with a PS file. So I'm stuck on what to do...