My color pastels are applied about the same way as the gray pastels and pencils. I'll give you little peak on how I accomplish that. First, I choose the right paper color from my Strathmore Charcoal Assorted Tints paper (not too light for the paper color to show through & not too dark to work in continuous layers in the same spot for color). I choose a mid-tone from the reference picture (grayish). Excuse my scanner-paper appears different colors. After sketching the outline, I apply the coloring in this fashion. 1. White Opaque watercolor (gouche) is my lifesaver. If I accidentally get pastel on it, it still shows through. Primsmacolor color pencils can do the same thing because it is waxy. . I painted white in her hair and feathers. 2. Applied Expresso or Dark Brown for her outlined hair. Black ink was penned on the edges of her feathers, eye makeup, nostrils, and earrings. Red and pink color pencils were used for her lips. 3. I used a very light yellow (ochre) looking pastel, light pink, blue and browns for her color coverage in her hair, face and collar. I also used a metallic gray color pencil on her feathers. I get more details with ink and if it is gone over in pastels or color pencils, it will blend in to look more realistic. It blends with a lighter tone, not leaving its original dark appearance. 4. You see the evidence of blending. I simply took a few clean blending stumps and used one for her hair, the other for her face, and the last for her feathers. Of course, I went over with some browns, grays, pink blush for her cheeks. I tried to keep those feather brilliant. Look at how the underlying details stay in check.