Rule #2.

Drawing hair is really gross. Drawing hair I hate the most.

-Willy Wonka. (sort of.)

In case I haven't mentioned it this week, I'm not much of a fan of drawing hair.

You can over simplify things, in which case your subject will look like Ken.

Not everyone wants to look like Ken, people.

Or you can spend hours working on the fiddly little  details, reminding viewers that they need to pick up a bottle of drano and a new plunger so they can unclog their daughter's bathroom sink when they get home from work.

Drawing hair  means practicing your balance. Specifically, it requires will power to stay in there and get just enough detail to be believable, and not so much that it's a distraction.