First of all thanks for posting your creation online for us to enjoy and critique. Taking that first step can be difficult, but it is good that you have taken it. With regards to the piece of music itself, I liked the intrigue of the start, but as it developed into the main body of the piece, the bridge passage felt a little clunky for my liking and, while it did achieve its aim, it didn't really sound as well as it could have done. You need to develop a 'storyline' more to you music. You have a great beginning and the beginnings of a great middle, but you go nowhere with the piece - it seems almost to end without having developed to any great extent. I liked the tone of the music.
Great work, but it needs some tweaking to develop now with more of a storyline.