I made this grid tool because I personally use this technique to create my own artworks, sketches to get perfect proportions. If you find this tool helpful, that's awesome! If you have ideas to make it better, even better.
Not much for formal emails? Me neither. Just say "hey" and we'll go from there.
PS: If you send me art you made using these tools, I'll add it on this site, probably print it and put it on my fridge as well.