Feel free to use any maps of mine you see posted! The more polished ones (like the dungeon room below) I usually Photoshop from a module or other published source. The middle one (the campsite) I made myself.
Most of the really important maps you'll be able to find in the AP itself, though there are usually one or two that you'll have to scrounge from somewhere else or make for yourself.
(I shamelessly borrowed Halal's pic from one of the LPF PCs. Either my search-fu is weak, or there's a real dearth of good Tengu pics out there. But this one is pretty much exactly how I picture Halal looking, so it works).