It's a common saying that films are never finished, they're just abandoned. This points to the fact that whenever a group of creative people get together, they will always want to adjust, trim, and optimize the project in one way or another, often to the point where it's no longer watchable. Films generally only make it to release because of real-life problems like unavoidable deadlines! That being said, this project is just the start of what's possible, and it's time now to take the Gung Ho challenge:
Go back over your montage and ask yourself if all of the cuts are really hitting the beat. If not, zoom right in on the Timeline and make macro adjustments to the timing.
Look again at the transitions. Do they need to be longer, shorter, or there at all?
If you have placed movement on your image files using the Effects Motion control, alter the keyframing, Ease In and Ease Out controls, to see what effect they have, and try some of the other interpolation settings.
Last of all, save this project in a safe place as some of the techniques you will learn in later projects, such as Nested Sequences, Motion Titles, and Export Options can and should be added and used with this.