I have this sketching notebook and I have some dried flowers, plants, mushrooms and other outdoor artifacts that I want to place on the cover and back of my sketching notebook, what should I use for the mold or in other words how can I contain the resin around my sketchbook when I am pouring the resin on top of it? I have done some research and it is very difficult to find cheap acrylic panels to put around it. Do you know any places I can purchase them or maybe even some diy ways to do it? I have a foam poster board, but I’m not sure if that will do the trick. Also once it cures what is the best way to remove it or should I use some time of spray to easily remove the resin from he mold.