Well, I for one would like to see more birthday related stencils. Different fonts,exciting new faces for jack o lanterns, silhouettes ect. Images to give me a start and that I could further embellish.
Because my writing is terrible(pretty bad arthritis) I'd love to see more sayings for all occasions in interesting fonts and definitely more background stencils.
I'm slightly tempted to buy from some of the online do it yourselfers but I'm sorry I just love the material that designer stencils uses. I've used mine repeatedly and they are still like new(I've done a lot of sample work for their catalog.
I've never used an airbrush. I use royal icing.
I am very excited to see what you come up with.