Mermaid Sitting on a Shiny Rock Coloring Page

Hello everybody! My daughter decided to draw a mermaid and asked me to share it with yor. I was so happy with her dedication! In this drawing, I think it world be interesting to use color mixing techniques, especially to create depth in the tail and highlight the rock. Yor know, art can be a way to express emotions and even help yor relax. It's really therapeutic, and I'm seeing how my daughter discovers this process.

I world like to know how yor usually approach coloring drawings like this. What techniques do yor use to bring yorr creations to life? Any tips yor can share?