I can relate to this and possibly help. I have lost about 70% vision in my right eye and 25% in my left eye due to glaucoma. In addition to this, due to extensive chemo, my hands shake like a rattle snake's tail. So the natural thing to do at 76 is to take up quilting. Needless to say I had
bit of difficulty. Many a time I sat there shaking my head, and asking myself "what were you thinking". But not one to give up easily, here are some things I got to help combat my problems:
1. This cutting ruler by June Taylor.
https://www.amazon.com/June-Tailor-2...+slotted+ruler
2. These stickers to put at the slots where I needed to stick my rotary in the cut the correct size.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
3. And laugh if you must..... these:
https://www.amazon.com/gp/product/B0...0?ie=UTF8&th=1
To combat my hand shaking, I bought a 1/4" foot with a lip. This one:
4.
https://www.amazon.com/Distinctive-Q...rds=1%2F4+foot
Then to insure accuracy on my seams, I purchased something like this and continued ant 1/4" line down the side of my machine. It sticks up about an 1/8 " to insure the fabric stays put.
5.
https://www.amazon.com/Scotch-4013-2...ided+foam+tape
Also, for when you must use other rulers, and you don't want them to slide on you, I found these to work best. A bit pricey, but I have tried others, and I feel
these work best.
https://www.amazon.com/Guidelines4qu...grips+quilting
For FMQ, I would probably stick to straight or curvy lines with the use of painter's tape to guide you and keep you straight.
As other's have mentioned, an Accuquilt would also work well for cutting. And you thought this hobby would be cheep!