Well, I'm about to read it now. It can't be as bad as Pattycakes, Equestrian Pie, or Scootaloo's Love for Pain.
~reads~
Well, I read it all (of what was there) and I've come up with a list of things I like and dislike.
I really like the whole My Little Human thing, that actually made me laugh. The human in Equestria thing was pretty good as well.
However, the things I dislike outweigh the things I like.
The pacing isn't very good (something I'm guilty of) but it does get better. Some parts don't make sense, such as why he is in Equestria. A lot of the idea's have already been done and are cliche, such as 7th element. I know it was done as an excuse to be with the Mane 6, but still, you could've gone about that in a more creative way (I'm not going to make any suggestions, it would help your writing if you thought it up yourself, therefore it is your idea). The characters seem rather out of character in a lot of places, especially Fluttershy and Twilight. Finally, general writing skills (I know, it sounds mean), but I think you need to work on your description. Even though it is in first person, similes, metaphors etc can really make your writing more enjoyable. A good place to use this would be when you meet Twilight. Compare her beauty to something else (not cliche). Try using more vocabulary, and don't use words such as 'said'. Describe how they are speaking, it will really help.
This isn't the worst fan fic ever, but it still isn't the best. A lot of fanfictions aren't exactly masterpieces or standing ovations anyway, so that's something.
*Pre-post note* After re-reading, I can kind of make sense as to why he is in Equestria, but still not completely.