With the masking tape removed, I quite liked the contrast with the unpainted fabric. Not sure which horizon line/ proportions I prefer ( if any) - I'm afraid I 'fiddled', always a danger when working on such a small scale and the painting is not as fresh and lively as it could be.
My next experiment was a 1/4 scale sample piece to test out ideas and fabrics. I made it double sided - both main fabrics used were kimono/yakuta ( conveniently already a narrow width ) and painted with acrylics both sides. The woollen slubby fabric didn't work that well (at least on this scale) but I was pleased with the results on dark blue/black patterned cotton yakuta fabric which has a slightly starched finish.
Next step scaling up!