Please keep doing what you're doing! NGL, I didn't even attempt something like this until like, year 1 or 2 into blender, and even then haven't touched making a big terrain like this.
If you're able to do this now and not give up, you'll be making just about anything you can think of soon enough!
With all that said, the materials on the monolith and characters are rad. And you rendered this in eevee too : 0 ? going through your blend file is fun, thanks for sharing everything and being a good part of this jam!