The next step after the initial samples, was to get some designs on paper - the first is below.
Checking on the fabric sizes, I was unsure if there were sufficient pieces that would allow me to complete some of the longer length strips either side of the central panel (above). Another design was then worked:
This appeared to fit the fabric pieces better & could also assist with assembling individual squares. With this in mind & working with the first 2 fabric samples, I decided to 'mount' the pieces in a fabric surround as below:This would also enable me to use some leftover plain batik fabric as the outer square strips - these ultimately being stitched like log cabin.