Oh... wow... over a year between the 3rd and 4th chapter.
Anyways, this is an amazingly simple minded, yet adorable story. The flow of the story is like that of an amateur documentation of the events as they are progressing, but that somehow adds to it cute charm. You do a really good job at representing the mane 6 that appear and dealing with their reactions. Teal himself has a different perspective of the world, which you illustrate very well, as well.
Once you get past all the cuteness, you realize there is really no plot development. Then again, a story like this probably doesn't need a central plot since its objective is to cause readers to d'aww over Teal's shenanigans as he adapts to life with "giant" ponies. The only plot development I could see is somepony finally figuring out where Teal came from and why he's so tiny.