[Ravager]

Once you've made the flake, it gives you the option to download it, use that feature to get a full-sized picture of the snowflake. It doesn't actually download it unless you right-click the picture and save it.
Then it automatically colours it blue (there's no colour choice as far as I could tell).

Go to the edge of the paper and the little dot on the scissors turn green. Click where you want to start on the outside of the flake. Then click again where you want to go from there. Keep clicking until you get to the edge.