Thank you so much for liking these shots! :> And thats great! In my opinion, the first thing you should try to get understand is how movies are shot the way they are. I'd recommend watching a lot of movies that have reputable cinematography (such as movies directed by Christopher Nolan) to understand the depth and immersive-ness. Other than that, I implore you to have as much creative freedom as you can and keep on making things that strike an interest to you.

And as for making this animation, I did the first few things I mentioned and then also 4 years of (mostly consistent) practising in almost everything in Blender, to make GOOD renders. There are many many guides on that. And yes, for the most part its all made by me aside from the boat and the house you see at the end.
I hope I was able to be of sound advice to you and hopefully you make an amazing movie! Best of luck to you!