Open up a new document (600X300px) and create a new layer called ‘background. Then drag a radial gradient ranging from D2EAFF to 9DCFFB from the center of your canvas towards the edge.
Now apply some white snowflakes to your background. I used this great free brush set: http://Qbrushes.com/objects/snowflakes-brushes/. Rather than applying each snowflake individually I wanted to simply paint in large areas. The images below show my brush settings that I used to achieve this effect. Finally I reduced the opacity of this layer to 40% in order to make the snowflakes a little more subtle.
Now type out some text, and select each letter, changing them to different colors.
Now go to blending options for your text layer, and apply a gradient overlay (blend mode: overlay, opacity: 50%). By using an ‘overlay’ blend mode, the text will keep it’s color, but receive the gradient effect, so making it look a little shinier.