Thanks so much, I'm still learning tho but yeah I've gotten better over time.
In this drawing for example in the guy's hair, which is a solid red color on the left and solid orange on the right, initially the right side of his hair was kind of pinkish bc it was a light shade of red, which gradually got darker as it went left. In other words, I used red for the dark shaded parts and orange for the lighter more illuminated portions, and I blended them by softly layering them to make a gradient. My art teacher told me to never press down hard on any pencil when coloring, but instead softly blend and add layers in order to make form apparent or something, so that's what I do.