>>5150810Real cels up close are really smooth, it is not watercolor, the paint is very opaque, and they would puddle it out to create a very heavy and strong color. You could paint with a default brush the colors and get it right
The film grain is film grain, the digital grain is digital grain, you can get both of those perspective things through filters afterwords
The lines are essentially pencil lines blasted into very dark, every once in a while you will have the paint show through the zerox lines giving it a certain look, the lines themselves can be used with any slightly textured lines, some blur and some sharpening, you can even use the dither blending mode and the default brush
Cels have on the line side of the painting a bunch of lines dividing the colors, the colors are lighter than what you have below and are drawn with hard consistent paint, not xerox
backgrounds are not my specialty, I have no idea how you would go about copying poster paints one to one.
You can always just paint in poster paints and use scanned pencil lines if you wanted it to look 100% real
