The supplies you will need are :1. Plastic hangers ~Buy them here2. Scissors~ Buy them here3. Zip ties ~Buy them here4. Glue gun~Buy yours here5. Christmas lights (Optional)~ Buy them here
You want to first take 8 hangers and start placing 2 hangers together at a time. You will be forming the first layer of your snowflake. It should look like the photo below.

Add a few zip ties to hold the hangers in place.
There is no right or wrong way to do this, you can come up with many different patterns. We found a very good guide to patterns here