I've often been asked about these little frames - you will find them in the Do Crafts - Ultimate packs.
I have stuck them down flat - think of the postage you will be able to save!
But, if you wanted to add some depth - sick the frames on with 3d foam pads.
They are really easy to do and they give you some lovely toppers for your projects when you are finished.
Let me see what you create with them x