Recently I was asked by Shutterstock to share my number one tip for shooting in the snow. I always say dress in layers! You can always take a layer off it it gets too warm for you. You also want to make sure not to change the temperature of your gear to much as the glass will fog and it's just a pain then.
My other tip is experiment with breaking out your flashes on the mountains. Yes it can be difficult, but the shot you get is worth it. Many times I have had to trek up and down the side of a mountain in very little light to get the flashes just where I needed them. You can see the rewards of the work and patience below.
You can read the full article including tips and stories from six other photographers here.