I've not edited myself, mostly because I can't devote the kind of time it requires, but I am an artistic type in my own way, and have learned what I think is most appealing over the years of watching others' AMV creations.
For general advice, I would recommend watching "Failed Experiments In Video Editing", by Big Big Truck Productions, and also "AMV Technique Beat", by member Douggie. Just for the heck of it, watch "Ordained From Above", by member Inertia for studio ManyLemons Productions.
Absorb the knowledge contained within these videos and you will be one step ahead of a lot of other beginners.
