Hey, Daisy. The tutorial does have the drawing of the template, and the one I used is that made of plastic. I have a small box of such templates that I've used in quilting various tops and I just found that one as I was going through!
[ATTACH=CONFIG]362556[/ATTACH]
Your can easily make your own. I did another "tear drop" shape but you could just make something like the attached:
[ATTACH=CONFIG]362553[/ATTACH]
or use your imagination! Just draw various curves from tight to loose and find a way to join them into one shape! Now I'm going to work on an inside curve one!