6x24" Shells ... Coming along slowly!

I finished laying down all the color on the surface. The Colourfix primer is fairly grainy and not taking the pencil as smoothly as I had hoped. My next step is brushing solvent over the areas, one color at a time so they don't run into each other. Then I go over them with pencil(s) to add more color and fill in the textured surface showing through. I'm working right to left, I'm not sure you can