First of all, for your covers I would give them a 9.5 out of ten. My reason for that being is because of the fact that it doesn't have a title on them. For me, it just helps tie everything together.
As for your writing, it is done extremely well. The only thing I would fix to make it more book-like would be to italicize the thoughts. Also, this is just a personal preference, I would stick to one POV. Again, you don't have to do it, but it is just the way I would do it.
I hope this helped!