Have you made these?

http://www.marthastewart.com/recipe/holiday-icebox-cookies?backto=true&backtourl=/photogallery/christmas-cookies#slide_1

So tell me have you made pinwheel cookies before? I would love to make these ones by Martha Stewart. They look so fun and colourful. But I am scared to death to make them. I need to overcome this. So maybe this season is the one. I phoned a friend who has made pinwheels before and asked her if she could help me. So I wait for her response. But tell me have  you made them and what has your experience been. Any tips for me? They are probably not nearly has hard as I think.