This video is just a synopsis of a longer instructional video, but he gives the basic concept for using the blending pencil. Basically you need to have all your color laid down before you blend. It's a different technique than working with OMS, where you can color, blend, color, blend, etc.
Dina Kowal Creative ♥ Original Art Prints
If you hear a voice within you say you cannot paint,
then by all means paint, and that voice will be silenced.
Vincent Van Gogh