Spent yesterday doing the bands other end of the four blocks. It was a lot easier this time around though I didn't get the consistency right yet. The tagging trips me up each time and I haven't got the finishing right yet. These are half decent though.
Adding some watercolour paper to fill the gaps between the spine and the sewing threads.
Measure the gap:
Apply just a little PVA.
Apply a little glue to the paper and then mould it into place and rub down well with a bone folder.
The top pieces also help to stabilise the headband which is unsupported until now.