Let's begin with a face, draw a circle and directing, it costs not directly, and is a little turned. At first draw eyes, a nose, moustaches at Ilya, then a beard, hair and ears.
We draw a neck which will smoothly flow in hands.
Then schematically body.
Trace a shirt, hands and location of a casing for a sword (a dagger?).
We draw feet and boots.
Can paint over different shades, as on the picture.
Look Vasilisa Prekrasnuyu, Ivan Tsarevich, Assasin, a 3D cube, Naruto, Dunno.