Here is one quick tip: watch your exposure. The meter in your camera is trying to expose the entire scene at 18% grey, so if there is a lot of white snow in your scene, the camera will try to underexpose. So make sure you take that into account and know that your in-camera meter will likely show overexposure by at least one stop (much more if the sun is shining on a lot of fresh white snow). Remember: snow is bright so don't be afraid to have high-key images!

Stephen