It's important to be harsh on your own work and pragmatically demanding on your collaborators -the flip side of that is knowing what looks good and why.
In putting together a quick cut montage like this, you don't always get to show the best work. You're making a little film that gives an idea of what the best work should look like. This field, animation, requires more than the a few seconds to demonstrate exceptional work. The trick here is use material which builds on surrounding cuts in some sort of graphic, dramatic fashion.