I wrote a few days ago about a mini tree that I made for my sister (here). I also made a felt tree skirt for it. I made a pattern with a 12x12 piece of paper. Then, I folded my fabric in half and then in half again to make a smaller square.
I taped the pattern onto my felt and carefully cut it out. This was definitely the hardest part.
I appliqued the snowman faces and trees onto the skirt and then blanket stitched around the edges. It was a fun project, and I think it turned out pretty well.