I’ve been experimenting the coloring of my sketches, and these are some trials. Feedback is appreciated.

1 – original sketch

2 – Original Sketch Colored

3 – Vector illustration based on original sketch

4 – Original Sketch colored + shading

5 –  more shading

6- Shading gone out of control !!!

Original Sketch , Colored,  Shading

Tried to add some background