I got out the 6 pieces I had done recently, cut them randomly and then pasted them back together.
I decided to just cut and paste. At first I omitted two pieces of cut-up bits and it was ok. I actually thought I had only left out one piece and didn't worry about it. But, as I was cleaning up, I found that there were two pieces. So I added them to the bottom.
Not a fabulous piece of art but something to think about. And I have learnt a method that could well come in useful when designing in the future.
And it was enjoyable to just do it for its own sake, not thinking that I would have any particular outcome.