I used two pieces of posterboard to make the tree and two posterboards to make the crows. Simply cut out the tree in segments and glue them together with regular white glue. Use strong tape to anchor it to the wall. No need for contact paper but that can be your choice to use if you wish. This is excellent for apartments as it can be taken down easly. Instead of drawing the crows I just let the scissors do the art and it went well enough, though some of them are not perfect. Leaf garland from the dollar store can make a 3 dimensional effect. I made it taller than the wall itself, sparing very little extra poster board, and ran the top branches onto a part of the ceiling. I only did a half tree for the corner of the wall.