First thought that crosses my mind when looking at this is it's WAY overprocessed. It's a look you're probably going for but it's not a look that is appealing to me. Sorry. Then moving on to the vanishing point part; is the distant pier your vanishing point? It doesn't really vanish, it just stops like a leading line. This image is certainly unique, I'll give you that. :) Good luck in the challenge.
While I think this is an excellent shot, I dont' think it meets the challenge.
"The vanishing point is the appearance of a point on the horizon at which parallel lines converge together. Compose and photograph an interesting shot that illustrates this concept."
I love the detail in the forefront and how it softens through the cityscape and into the clouds.
I give it high marks on the composition, but take off some on not meeting the challenge reqs.