Drawings are quite nice!
But color-correction is a bit too harsh i believe. Is there any reason for that ? (video quality, contrast because of the paper in the background ?)
And maybe you should put a voice over....like in the animation with the "team". Is more interesting that way.

This animation lasts 4 minutes and it needs something to keep viewers attention and to make it easier to understand.

Other than that i a job well done !! :)) Just needs some "ZING" to it ! Voice-over should take care of that.

Keep it up ! 
emiN