Please give pointers

I’m new to digital art is coloring. I drew this and colored it, but I’m not getting the feeling I want. It feels very bland, and the colors don’t pop I feel. Is it because there is very little contrast with the shadows and there are also no highlights on the skin?

I’m new to digital art is coloring. I drew this and colored it, but I’m not getting the feeling I want. It feels very bland, and the colors don’t pop I feel. Is it because there is very little contrast with the shadows and there are also no highlights on the skin?