I started with a color palette idea
& did sketch over top a blue texture
Cleaned up the line work
I started how I might do an acrylic painting with the darks
on a separate layer, but realized this wasn't going in
the direction I wanted.
On a layer under the line work I did all the midtones
I added shadows on a multiplied layer
I added highlights using a charcoal brush with some texture
I added a fog png over top and some BG shadows
TADA:







