I can give you rough measurements for the v-berth cushions so your seamstress can get the materials – but I would suspect the actual cushions must be at the shop to get a perfect fit.
For purchasing materials, I approximated that the v-berth cushions were 5″ thick, 21″ wide, 80″ long. Remember, the cushions are not rectangular, but this will give enough materials to do the job.
Rainshadow does not have the standard qtr berths in the aft cabin, so I cannot help with that.
Marilyn, moderator