Here are some steps of my latest quick digital portrait work. It was done in Adobe Photoshop as most of my digital art.
The first step is a lineart sketch of the face:
The next one is a rough coloring on the new layer below the lineart:
Then i gradually add more colors (the hair was done on a separate layer):
After that i did some rough background coloring:
And finally i refined everything with a help of some magic: