Shading and highlighting – what is that?
Shading is a dark color added to an
object to make shadow.
Highlighting is a lighter color added
to an object to show which side the light source is shining on it.
It is opposite the shadow side.
For an example, I can put a dark green
on the base of the leaf that I am painting and light green on the
tip. Dark green can create a flip in the leaf, and a very light
green can add even more detail on the tip with a jagged edge.
Remember to add detail and interest,
volume and depth with shading and highlighting.