Ah have you guys ever watched Mark Crilley's great tutorial videos? They're awesome for anyone who wants to try out or learn new things!! I know that these are the first videos I started watching when learning how to do manga.

Even if you have your own style or already know how the manga basics, its interesting to see the different methods^^

Check out his whole youtube channel: HERE
(the video is his newest upload at this time... scroll down on the right to browse his other uploads!)

-MangaKid