Snow Melting Project idea

This idea was inspired by a link a friend of mine shared with me on Facebook a few weeks ago.  My idea is to create a stencil and place it in front of a light source to then have heat from a power source melt a shape around the stencil in the snow, similar to how the light is acting in the images below if you follow the link.
Still trouble shooting ideas.
Any thoughts?

http://www.stumbleupon.com/su/2EcEPS/thatsdopedaily.com/2012/01/21/shadow-photography/