I don't have Photoshop either, but I would point out that a common problem with this type of request is that the person doing the work ends up having to do it 3 or 4 times, due to "that's not what I meant", or "now I've seen it, can you just change this?" etc.
I'd recommend that you supply a reasonably detailed idea of what you want (sketch, annotated copy of the source photo, anything that's got to go in the gap between the separated couple etc), and undertake to accept what you get