This is a very creative exploration of impressionistic harmony and progression. Keep writing this stuff, Debussy and Ravel were great.
Since you ask about guitar fingerings, converting to TAB would be an easier way to see, as most guitarists are not classical guitarists, but from what I can see, the only exceptionally tricky thing you've done is the parellel 6ths. That would be pretty difficult to play.
Cheers!
Mike