With just 2 cans of spray snow, and a few scrap cardboard templates, we did 2 huge picture windows in just over an hour as a fun weekend activity with the neighbour's kids.
Step 1: Cardboard Templates
Just search for "Camel silhouette" on Google image search, then print and cut out of cardboard carefully. I used my 4W laser cutter, which helped make clean accurate cuts.
Step 2: Spray the Characters
You can even vary the density of the spray by adjusting the distance from the spray to the window.
Step 3: Add a Landscape Horizon
the spray should be darkest near the horizon, and fade away with a gradient. A good trick is to make 2 layers of hills which adds to the illusion of depth!
Finally, clean up any over-spray with a wet paper towel, and youre done.
That's all, for this instructable. Enjoy!
Step 4: Add the Star!