I'm currently going through the Fastlane lab material, and a lot of configuration guides and implementing them in my home lab. I feel ok about the material. I wish I had more time to to cover topics like MSE and WIPS, but I decided to go ahead with the lab on a short timetable. At this point I'm looking more at SWTs (Stupid Wireless Tricks), learning some lesser known CLI commands and building a strategy for dealing with problems in the lab.
My focus for skills building is moving away from the simple "How Do I?" to more of a "How Do I Verify?" or "What is the quickest way to configure feature <x>?"