About the layer you can see that sometimes I use a layer in “Multiply” to create the shadow to give me more depth.
I created a new Layer and added new details using colors tone in Yellow, red, brown. The choice of colors is really important because the colors gave us an atmosphere at the illustration. And for this concept I choose to use brown, yellow, and red tone colors because the dimension illustrated is crude and earthly.
Add New Details using the same tone color...