I also made the Reindeer & Santa. For my Santa I have used white polar fleece on parts of his clothes. I have never had luck cutting fabric on my Silhouette. So I chose a more simple approach. I cut the white cardboard pieces then glued onto them the polar fleece. I placed something heavy on them as they dried to keep them flat. Once they were dry I just trimmed off the excess polar fleece around the shape. Then proceeded putting my Santa together as normal.
Lastly my Snowman