Last year, I made a few of these snowflakes using two different Christmas fabrics and fusible interfacing (like you would use for applique) The ones I made ended up being only 6 inches high. Some I hand stitched together, and some I used Elmers glue. I think the hand stitched ones were better, even if they were more finicky. They certainly made an impression!
http://www.wikihow.com/Make-a-3D-Paper-Snowflake