I am glad to get a positive response from you all about this challenge.
I, too, do not have very many stencils with a large opening. I do have one from Heidi Swapp that is a large butterfly, larger than the home-made ones I used in my projects, but I think it would work too. Heidi Swapp seems to have a few ones like this.
I was also thinking you could get away with bigger stamps if you had one of those bigger stencils.
I also want to do some more trials with this.
Looking forward to seeing the entries!