On topic for me as well Carolly. I learned many things from studying da Vinci . Bought a BIG book of his works that included drawing and what nots. Interesting side note most painters stole his work and pagurised the heck out of him . Seems they had one hell of a time drawing hands back then and coveted his hand scetches. If you know what to look for you can see his work copyed by allot of the great and not so great masters back then. Kind of like what happens here allot .