Inspired by DaVinci, I get my theory right first. I am talking of art, here.
As I understand there is a problem with art. The space is 3 dimensional and the paper we draw on is 2 dimensional.
In short, one needs to handle perspective, convex planes, concave planes, surface flaws, nature gifts like mole and more.
And above all resemblance is necessary.
And colors.
Colors I won't be able to do much because of my age and genetics.
I shall improve my resemblance.
I shall do cosine hatching with focus and changing focal points more suitably.
Have a nice weekend, blog readers!!