And for anyone who hates drawing 99 paper templates, you can buy a thick acrylic template if this is your favorite quilt to make.
It makes cutting accuracy a
near-certainty. Well, within bounds.

And for curves you need a very small rotary cutter as 45 mm blades are unweildy, and the 28mm are a huge improvement. Elf accuracy on the teeny tiny rotaries, just buy plenty of blades and cut through no more than 2 layers of fabric. The templates may cost more than 30 dollars, but if you divide that by the # of quilts (30) you plan on making with these, it comes out to less than a pattern would cost ($1 dollar) unless you luck out on Ebay or Etsy and find a used set that never got used or was used so infrequently the seller is trying to get her orphan improved nine-patch blocks sold too.

I know you can't read who made the templates, but I think it's a lady I met at a Pfaff convention back when whose name is Marti Michell.
Her website is here:
From Marti Michell: Perfect Patchwork Templates
I noticed her products are also sold on Amazon
Amazon.com: marti michell wedding plate templates
Also, ebay:
Marti Michell Quilt Templates & Stencils for sale | eBay
If memory serves me right, Marti also designs some of the most beautiful floralesque quilt fabric I have ever seen through a Seattle or Portland company, or somewhere -- Maywood Studios. The company may be separate from the wholesaler I used when I was active in my quilt store. I don't know if she is still doing that, but consider yourself lucky if you ever get enough of her luscious prints to make a quilt with. Just sayin'.
Your very best bet is to ask your fellow quilt guild members if they have a double wedding ring template set to beg, borrow, or buy. I found one new price included shipping but they were asking $68 for it, whereas her website sells for less than half of that, and you never know when you're going to run into an estate sale to find Marti Michell templates, hopefully a wedding ring one so you can make your improved nine patch with the wedding ring template set. Quilt stores often do not sell template sets because the inventory is very expensive to offer everything, and unless they offer classes, they might not carry the template set you long for to make cutting a lot easier.