Hi Skullie
I have a tutorial for the tombstones, but to answer your questions, the foam is one piece, the thicker the better. The areas that are taped form the shape, the untaped areas are sprayed with the spray paint (any paint seems to work but use a color other than white) the chemical reaction of the paint on the foam gives the detail, no need for dremels or cutters
FYI ... the foam I got from the store I work in free. The tape I already had, lettering from the dollar store and walmart cost about $4, spray paint from Big Lots 80c a can, latex paint $3 found in the paint department (mismatched) and some acrylic paint for the detail & weathering already had ... Total cost for the two tombstones $9.60
