So I made this Illustration as a practice for gesture drawing and digital painting technique. Here I share a bit of the process. Hope You like and find it useful.

So for the first step I draw a red composition sketch and then, over it, I draw the final contour drawing...

Then in graysacale I add local tones, volumes and details. In that order:

Finally I add color, textures and final corrections.

The latter is the final result. Thanks for viewing!