Well, you managed to get it cut almost in half, very good, that makes it better, but still not yet as good as you could get it. Go back now and relook at every scene as it plays out. Be critical and ask yourself, at what point is this clip not showing me something new. An example will be where you come upon the bridge, You rotate to the right to show the bridge, and at that point you should cut to go to the next scene. However, you do not, you continue to let the scene go on and show the bridge now starting to pass to the left of the screen.
Continuing as you di, with that scene, you did not intrude anything new to the viewer, it was just a continuation of the same scene. Therefore, you need to trim that down more to keep it interesting in order to not allow the viewer to think something like... Okay, we have seen the bridge, I don't need to keep seeing the bridge, I know it is a bridge... NEXT SCENE PLEASE!
The same goes for a number of extended scenes after that. Go back and see if there is anything that can be trimmed down again, to keep the whole thing shorter, also look at some of the opening sections of a scene, you will find that there are some stuttering points in some of the filming, which could be removed and still tell the whole story. Also when travelling along that river, there were some longer shots that did not introduce anything new to the viewer, its a river, okay I get it, oh, its still a river, okay, ohh come on, it is still just a river darn it, NEXT SCENE PLEASE!
At some point in that river scene you could remove a section and then do a dissolved between the start and end of the clip and it will still tell a story. As I mentioned, go back and view it more critically and ask yourself at what point has the viewer seen enough of this scene. When you find that point, cut it there and go on to the next scene. In each clip ask the same question and see how much more you can trim this down and still tell your story. You will find that you can trim this down to at least half the length the new version currently is, and it will still tell the viewer the same story, yet will not allow them to get bored watching the scene.
The best thing to think of is that a scene should just about give the viewer enough of that clip to leave them satisfied, but not quite enough. Each scene should leave the viewer wishing they had just another second or two to watch. That way it will leave them wanting to see more and either may make them want to re-watch it, or to look for more of your work to see what else you have done. You want to keep them interested and leave them still a little bit hungry, wanting more. You don't want them to go away thinking that was exactly what I wanted and I don't need any more, because then they may never come back to see it again, or to want to see anything else you shot.
I ran a flight school for years and also did what were called introductory flights, but were really sightseeing flights. At first I gave them a nice long fun time in the air. Many were completely satisfied after the flight, some even said they had had enough now and would like to go back. None of them ever came back for another flight. So I reduced the flight time a good bit, charged less (But if the time was cut in half, the price was only reduced a third, for example). Most people said, when we landed, that was fantastic, I could have stayed up there much longer. I suggested they come back for another flight where I would show them a different area, equally as exciting. Many did return to do just that. I made more money, got to fly more for shorter periods and had many repeat customers spending more money. So for me it was a win-win situation.
By the same token, in your film, you need to leave each scene just before the person has had enough and go to the next clip. That will keep it interesting and keep them wanting more. Think back to yourself, how many drone videos have you watch whereby the scene cuts to the next one and leaves you thinking, ohhh I wish I could have seen just another few seconds of that. That is what you want to strive for and not have scenes so long that people are beginning to say, okay seen enough, next scene please. Hope this helps.
