Snow Art

Having been a big fan of Banksy over the past 2 years ive been itching to have a go at doing some Clever Artistic Griffitti that can be relevant in the modern day such as banksys works.

Now as im no wizard as a painter etc.. this isnt gonna be easy but thought along the lines of banksy and with his stencil techniques i may be able to try something similiar and start off small scale for practice.

Im thinking of doing a few small griffitti sculptures in the snow tomorrow as its a great opportunity at the moment. Im thinking of absolute basics so maybe make a perfect box shape in snow (flaten it to perfection) and then spray paint spot on it like a dice (or spray paint it all except the spots) obviously done best i can.

Basically what im asking is has anyone else done any genuine art with snow and what is the ideas etc behind it?