I got this itch too when I came across tinyrenderer [1] and worked through the early lessons through shading, but didn't quite finish the texture mapping yet [2]. It was fun to work in pure C from first principles, even side-questing to write a simple TGA file reader and writer.
I'd be very interested to see your tutorial when it's done!
tinyrenderer looks impressive! The tutorials look good too. I might have to borrow some ideas from them.
No idea when I'll get around to making the videos, but if you want to follow my channel it's at https://www.youtube.com/@fast_erik