I prepared a tutorial for the Copic Marker Europe blog on colouring snow. I have used the Magnolia snowman as my image. White is very easy to colour. You don't want to colour too much of the image to get the effect. You can use your cool grey tones but the warm greys also work well. For today's snowman I have used C3, C1, BG10.
I stamped the snowman onto Copic Colour perfect colouring card. I have started by mainly colouring the shadowed areas and leaving the rest true white. I have started with C3.
I then blend out the C3 using C1
I then added some BG10 as when colouring cold, frosty or snowy images if you add a blue tinge it gives off that feeling of coldness.
As I like smooth edges I have gone in with my colourless blender and blended to smooth the edges out.
You can also outline your image using the BG10 and this really makes your image pop.
And here's the card I made using the snowman. I do like to create depth in my colouring, and this is the great thing about copics, you can always add more colour, so I went back in and darkened some of the shadows using my C5, and blending out with the C3.
This is my first shaker card and won't be my last, I really like how it turned out.