I believe this one has way too many distractions. I do realize that shooting between the trees is a tough mark but the branches just becomes too overbearing at times. Maybe if the background was a lot simpler, then the branches would stand out on their own. Just my opinion of course ;)
to really mymic his style the image u have should be in a form of sepia or B&W, or a crome tone.
also as far as composition goes u fall far from his images and his eye. he is 1 of the great greats in photography and as far as the framing goes he would not have taken a shot in such a record like form, something more powerfull from lower down and facing up through the trees to make the city loom above the viewer. he worked alot with drastic light and unfortinutly we can control the sun but the closest we can come is buy abserving the stiuation and looking for the best light and shadow, something Stieglitz if famous for. this is a great start but really has along way before it hits his kind of style, and imagery. GL