I want to increase some of my 2D sketching capabilities and thought I would start with some simple example.
So there is sketch attached below I want to render/shade in the way that it would decribe/reflect the shape introduced on placed aside cross section. I want to learn how to see it, feel it, do it.
I am perticulary interested both in : hand/manualy shading and software one. Because I use ordinary, simple, free to use tools as Gimp is, please take this into account:)