Start creating a New Document. Size: 320 X 180 px. Color Background: AA732A. Then
type some text on it. Font: Comic Sans MS, Bold, Size: 120, AA: Smooth, Color: C2C2C2.

Double clic on the text layer to open the Layer Styles. Use Bevel & Emboss and Stroke
and set these settings:

Now you have something like this:

Create a New Layer, double clic on it to open the Layer Styles. Add inner Glow and Bevel and Emboss:

Next Grab Brush Tool and use a 6 – 10 px Hard Airbrush to draw the snow. Make sure you have white foreground color. There you have, the Snow Text Effect. I also added a little shadow.