I thought I would explore a few ideas I found in my wandering...this is the link to a tutorial on making stencils with hot glue and this is my stencil and a test piece.
here, I didn't have the Elmer's Gel so I tried a Pritt Stick, the white one made quite a good resist
The third thing I tried was from Andy Skinner, well my crackle didn't crackle, (I didn't have the same products) but I really liked the results, especially as the used two acetate prints I have had for ever.
this, again, I didn't have the exact products so my rust became patina instead but I would never have thought of using it on fabric.(the little square)
Hobby Craft would up their game, my local branch is undertstocked and over priced. Or better still Michael's and Joann's open up here and bring a little competition (and all their lovely products)