Are you using "AF" to stand for "Adobe Flash" Or "AFter effects"?
If you are trying to composite character animation over a background in After Effects, yes, it is a fantastic application for it.
You can create many types of backdrops easily (and very easy to modify elements back/forth from Photoshop)
As for character animation, there are multiple standard tools within After Effects. There are also third party plugins that may help you.
One plugin that I like to use for character animation is DUIK. DuDuF R&D » Duik – DuDuF IK Tools
Another plugin that is excellent is Mettle Freeform http://www.mettle.com/tutorials-digieffects-freeform-freeform-v2/
there are many ways to create an animation pipeline from Photoshop to After Effects.
here are two simple methods:
1. Create pieces of a character rig in photoshop (torso, head, limbs) on separate layers. Later, import those into a projects and animate them as individual layers.
2. Animate within PHOTOSHOP. If you're animating traditionally by drawing each frame in Photoshop, make sure that you start on a blank layer (not a merged/flattened background). Then you can import the photoshop document as though it were a movie, but still have the opportunity to edit it.
The first method is the one I'm going to do, I've done the 2nd one before though. Thank you for your reply!