Cover Judge: Nice forest and mountain backdrop. Good font. Only thing is your name isn't readable, too small.

Blurb Judge: Short and leaves room for lots of possibilities.

Note: So, it's actually a fanfiction? Because you're using characters from a show, it appears.

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Minor spelling errors here and there.

Interesting start. I don't know what the original series is supposed to be about, but it feels more like sci-fi to me.

However, I don't see what the cover has to do with the story.

I think you have an issue with commas; as in, when you separate two phrases with a comma, like this:

it sounds odd because the two phrase aren't connected; they're more like cause/effect. You can say "He said, making Octavia roll her eyes" or "He said. Octavia roller her eyes"

Also here:

and here:

It just sounds a bit amateurisch.

After landing on Earth from space in a rocketship or whatever it was, you usually cause burnt ground marks, or flatten trees, or blow away dust. Maybe it was a hovercraft style?

Your writing starts derailing a bit; the situation is slightly confusing and things happen without much order. Also, they can't reach a mountain in one day.

Clarification: Is this the plot of the show or a spin-off? Because if it is the original...well...copyright...and all you made up is the backstory.

Also: the chapters are really long. When they're long, there's no excitement when reading it; it's all a long, numbing broth of words.

Summary: Has potential, you're dragging it a bit