And usually of course you need to decide on a theme for your animation...since it is a hair expo maybe go with a sort of Maurice Binder/Daniel Kleinman type of quasi-abstract, ethereal piece with models interacting with fancy backgrounds, highlighting the glamor of the event, i.e., pretty upmarket (but without the nudity, of course!). Motion's Particle Emitters, Replicators, Filters (like the slit-scan stuff), Paint Strokes features are ideal for this kind of thing.
(I help run a media science-fiction convention and I do the videos for them and I've done stuff like creating title graphics of the guests using Shake and Motion. For the last two batches I've rotoed the guests and composited them behind Motion backgrounds. In one, I even did a sight-gag of Claudia Christian blowing a kiss to someone in the audience and used animated Motion sparkles to complete the effect.)