Your suggestions were genius! First I auditioned other colours - black, hot orange, red ... but didn't like the way they worked together. It looked a bit motley. So I thought - if I'm not using other colours then I'll get a bit more ....um .... unrestrained? unruly? in the slicing. So I sliced and added and ended up with these.
I've still got to fit the pieces together with more filler strips, which will be off centre. I like the diagonal light green in the middle piece. It has been wonderful fun, and it looks SO much more interesting than it did before. Thank you all!!!
PS no seam ripper was used in the making of these pieces .... I may never unpick again. :)