You're absolutely good enough to make nfts and ask for good prices for them. Whether you think your work is the "right fit" for nfts is entirely up to you :D
I love the phoneme wall! I have made a number of these before as shape keys before I had rigify's lovely face rig to work with (which is much more preferable XD). Yay for cooperative sand, you managed to get some incredible detail in there :O
It is something I have been meaning to try for some time, I have actually only ever sold two pieces of my work an etching and a culture. I may do some jiggery-pokery with photoshop to create something different.
It will be a new experience for me and I like the way it could possibly make the works live on in a new life.
!ENGAGE15
ENGAGEtokens.