Paintstormstudio.com

Its a pain to have to draw the lines every time i start a new drawing.
Btw if you dont know what im talking about :
"The guideline proposes that an image should be imagined as divided into nine equal parts by two equally spaced horizontal lines and two equally spaced vertical lines"

Hello. I have a PNG with the lines I need and I just paste it into any painting that I need it on. My base PNG is a square shape, but it keeps the proportions regardless of what size I resize it to. Not sure if you tried this yet, so I thought I'd suggest it.