to cut out the guitar shape thats the easy part, the measurements is the hard one.
here is a really nice website that might help you a lot:
http://www.projectguitar.com/
and for my opinion, GO FOR IT. DO IT!
http://www.youtube.com/watch?v=9tOf1MFM6u8
Haha
Look at 00:35, the sweeping part, instead of playing it, he does what alexi does in the video, toss his hair around.
Btw, they call him "starchild".