What thickness and types of wood are used in the new zombie pattern?
If you mean the Zombie Response Team, the pattern calls for 1/4" thick. The suggestion is to use contrasting color woods. If you're new to it, the Baltic Birch Plywood is the easiest to cut (less likely to break than off-the-shelf ply), and can be stained to get contrasting colors. Or use unstained ply for the backer and get some 1/4" walnut or red oak from Lowes or Menards to cut the front image. Wen oiled the walnut and oak will darken quite a bit.