In the latest episode of RGTV, I mentioned an older tutorial called Super Tight Junk Mattes. It’s a great technique for creating very precise Junk Mattes/Garbage Masks very quickly.
You can find it here
Of all the tutorials I’ve ever done, this is one of my favorites because the technique has saved my professional life on more occasions than I can count. I get a lot of emails from people telling me that it has helped them on some of the more difficult keying jobs they’ve had, as well.
If you really want to learn a ton of great compositing techniques, check out Greenscreen Made Easy: Keying and Compositing Techniques for Indie Filmmakers
by Michele Yamazaki. It’s full of great stuff (including the Super Tight Junk Mattes technique).