Thanks Im and Brenda for all the tips,
Maybe something like this (attached) Glad the vintage machines should do, the 201 has the most sensible harp space, the 500 is a nice set up tho, and has straight stitch plates/feet, stitch isnt quite as fine tho I suspect.
Should I give it a very fine backing like a muslin or similar?
I did wonder about a 'circular' (straight edges that make 360degrees, ie 10 36degree pieces that taper) Japanese style cushion, but I wasnt sure where to start with a filling, I also wasnt sure if the shirt fabric would take the kind of punishment a cushion gets...
Thanks for the advice around seam allowances.
Any equipment you'd strongly recommend?
Thank you!