I started with the head. I cut out circles for the head, then stacked them on top of each other, figured out where i needed to glue in a bicycle helmet and then layerd the rest on top. I hot glued all the circles together and then sanded them down to be smooth and rounded off the edges. I then figured out where i would need to cut out a spot so that i could see(fortunatley it was right at the mouth) and then put window screen over the hole. I then cut out the eyes and place a sheet of paper over the eys so that they would glow. I put a thin layer of drywall joint compound on the head so that the spray paint wouldn't eat away the foam. I then spray painted it. I followed that up with paint for the fleshless mouth. I then cut the body out of the cardboard. I decided that i needed some dimension to the chest and heart so i cut out a section and then made ribs, heart and spine. I then made the legs and hands, cut out sleeves for the arms and painted the entire thing. I then slathered the costume with stage blood and viola, Lego Zombie. The pictures of the finished product are after the night i wore it out, the head got knocked around a good bit and took some damage which is why there are several chips in the head and you can see the seam in the middle. I would reccomend that you tape the seams and then put on the joint compound which will hold together better.