Formless God: Take a page from your "Alphes style" and don't be afraid to cover larger areas with shading. Switch to a larger brush if you need to cover a larger area-- the shading looks kind of scribbly, like you've been using the same small brush throughout. If it helps, cel-shade it first, then add the airbrush/ paintbrush/ whatever it is to the cel-shaded edges.
Good luck.