Option 3 was originally my idea; but I think the middle 2 hands are too similar for this (even though one is 24 and the other 9!!!) and it looks lost in the middle of the cover.
I will be going around the outside of the design with a brown quilting thread to border the prints and will be embroidering their signatures around the outside of the cushion; I anticipate this will be about 1cm deep.
Answers on a postcard please...
I think my new favourite might be option 4, but I would love to hear what you think; answers on a postcard (or in the comments section) please!