My little mono chrome children are sitting high on a brick wall. Arguably it might have been a smart idea to prepare the background first but don’t you just hate smart ideas?
I tried to Bondaweb everything except their legs. That didn’t work. So I Bondawebbed the leg free bit and laid down some ripped fabrics. Then I Bondawebbed the fabric I was applying rather than the background and am engaged in cutting it free hand a fitting it around the legs. Seems to be working after a fashion.
Next step is to place a sheer fabric over the wall, stitch it down and burn it back. Plenty of scope for disaster yet!