If you get stuck in this lot, LM is your brand new bag. This is a dialogue for applying a filter to a layer of a .psd image. You can also animate individual layers of a Photoshop image. This will definitely come in handy if you use Photoshop. Use raster images in .swf sparingly and discreetly.
Collage is an art method that is executed poorly far more often than well.
Take a look at it. Hillman Curtis uses a lot of this kind of mixed media to excellent effect. Look at his work. Before you go off trying to make an MTV video in .swf, look at his animations and count how many unique images are in a movie. Look at how they move.