You see peeps, I have the tendency to buy stuff for later use. Not knowing what I'm gonna do with it at the time, but I always come up with something...eventually. I can't say how long I had this thick foam. I need more of it and can't find it. Darnit!!
Cut foam piece to fit size of ahesive shapes. If you can't find the thick foam, you can try either gluing to pieces together or even try a piece of plastic. You can usually get this material from packages and just cut them up. Here is some that I got from a seat cover package that I cut up. Closest thing I could think of since I can't find the thick foam anywhere. And plus it's clear so it's good for placing your stamp when using it. Though I haven't tried this yet.
The adhesive foam shapes I have come together, so I separated them all first.
You can use different sizes and shapes.
Add leaf shapes after separating.
Just peel and stick.