Here is Part 2, if you havn't seen Part 1 its here: http://agartblog.blogspot.ca/2012/07/traditional-painting-step-by-step.html
Step 5: Detail.
Detail is really only a bunch of tiney lines and dots. You can spend a long time rendering details or you can just do the important ones, that's up to you. I usually only do details in simply blacks or whites. this way they are crisp and you dont need to keep mixing them
Step 6: Washes.
Often Details make things appear too harsh so its good to put a wash of a colour over details to soften and bring back colours you want. Washes can also create depth and atmosphere, you can push things away from the forground with a wash.
Step7 Final highlights
Just put a few final dots of light to make shiney stuff look shiney, and it's all done!