I made these paper snowflakes about 5 years ago and put them up every year. These ones were made up on my own without a pattern. But I did find a place where you can print out a pattern to make your own. Here's a website where you can print out the patterns. http://www.papersnowflakes.com When you get to the website, click on the tab at the top that shows the little scissors in a box that says "Patterns". There you can pick from tons of patterns.
You will need some very sharp scissors and a little patience. I have these taped on my two built in cabinets in my kitchen.