I used to play Warhammer 40K.
Lots of talented painters are out there. I have a few I keep tabs on that do great work and work cheap.
If you clearcoat with Quickshade (light, medium or dark) it will do the shading for you. You just paint, do your lining and highlights and the Quickshade does the rest.
I did a castle with grey paint. A few shades lighter with some drybrushing and a coat of Quickshade dark.
Makes ok paint jobs look good and good paint jobs better.