The great thing is you can make this almost for free because all the material, cardboard is so easy to find.
approximate time to construct : 2 hours
cardboard preferable the thin sort , for easy folding, but any will work and you can have any color depending on what skin tone you would like. If you don't like the color you chose you can always paint over it but this does ruin the authentic cardboard feel of the piece.
glue gun and glue sticks for gun, about 4 (you can also use duct tape instead of a glue gun but you may find it tricky to do the fiddly bits)
Here above are images of my finished product. I included a number of accessories such as a tie and a hat which you don't have to include but I will explain how to make in the instructable. I also included a second face on the right of the main face to get a Picasso / cubist type feeling to my sculpture.
1) stick this sheet onto cardboard
2)cut out shapes in cardboard
1) stick the rigid part of your hair strip onto forehead 2 and if you have curly hair curve the pieces by running your finger nail down them.
2)stick forehead 1 onto the bottom of forehead 2 to make a curved scalp
carefully peel off paper and add accessories if you would like:
1) tie: cut out the shape of a tie and draw on stripes then stick to a cylinder stuck to lower jaw which acts like a collar
2) for the hat you simple make 6 more forehead pieces and in the same way as before construct a dome then you can just cut out and add the peak
YOUR FINISHED PORTRAIT : )