I'm working on developing a digital art process that works for me. I'm not there yet, but here is where I am today.
Much of it is based on Aaron Blaise's technique. I recommend his tutorials. He's a very skilled artist who has developed an effective process, as opposed to me who is trying to be a better amateur. I use Krita rather than Photoshop because I prefer it. The core process doesn't change.
I had doodled an idea in pencil that I scanned in. Then I refined the pencil using a pencil, well a digital one 'Pencil Large 4B' in Krita. From various attempts I'm leaning toward an ink brush, for this picture I used the pencil for texture. Not sure it mattered. Having good line work really does matter to me. I'm a lot faster without having to 'find' the image as you do without lines.
|Refined Lines [You can see where I highlighted the line later - oops]|
Under the drawing layer is one for flat 'local colour' aka the 'Flats' in the comic world.
|Flat Layer under Refined Line or Ink Layer|
On top of the flats and line layers is a layer set to Multiply. This becomes the shadow layer. I used a 'Charcoal Rock Soft' brush to give the shadow some texture. Can you tell I was thinking a lot about texture for this picture? In the past I've used a simple opacity only brush and that works. I wanted texture this time as an experiment. I did one pass then added another multiply layer to deepen some shadows. These two can be merged. I felt I had more control keeping them separate. My plan was to lose the original lines in the shadows.
|Flats, Line and Multiply (for Shadows)|
Next layer on top of the stack is set to Overlay and was for highlights.
|Flats, Refined (Lines), Multiply (for Shadows) and Overlay (for Highlights) Layers|
The final top layer was a normal layer and I used any brush I fancied to refine the image. I call this modelling as I fix and tune the image. I used a standard air bush and 'Wet Textured Soft' brush.
|Modelling Layer refining and 'finishing' the image. [I didn't put it on top because that would be the finished layer and that's at the top of the page.]|