Can't rate higher without reading more chapters, but from what I've seen, you're off to a great start. Grammar has minimal errors, nothing a quick once over won't fix. Judging by your work, you already know your stuff so no problem there. Dialogue is natural. No complaints there. Prose too. The first person POV is pulled off faily well here, so no faults there too. Aside from the fact that I only had a few chapters to work with, this is well made. The only thing I have against it is my inherent anti-bias against the genre. It's hard to impress someone that's read a lot of fics, but I believe you can pull it off. Keep on writing 👍