Hi ika,
Not bad for a first clip, tho rather slow. (as davdud said).
Would've been more entertaining if fitted into a 60 second timeframe, rather than 6 minutes.
Practice and experience will spruce up the actual content of your animations, but
most importantly for now would be to tackle the 'timing' thing.
Not sure if you're using 24 or 30 (?) frames per second, (both ok, i prefer 24). So, if you don't use a watch you can just count out approximate seconds of time for each movement/take.
This can be done by simply imagining what will happen. IE: redman jumps from top of building. 1 second to bend at knees and prepare for jump, 1 second to jump high point, (jumping 'up and off', before falling to ground, and maybe 3 seconds to fall to ground. (if that seems how long it would take, depending on building height)
So thats 5 seconds altogether. So that whole part would tak: 5secs @ 24fps =5x24 = 120 frames.
(150 frames if animating at 30fps)
Render it out and tweak timing after watching the clip. (or part of the clip).
Once the timing is more realistic, the whole video becomes more easilly watchable.
(as davdud said, a common issue when first starting out in animation, not just Anim8or, is getting the timing right, and not dragging things out to a 'frustratingly' slow pace.