Can someone give me some tips on how I could have taken this better. I mean, how is the composition, metering, focus, etc.
I think the exposure is pretty damn good. Nice details in the clouds. Not sure you need much help there!
Its a nice shot, but it needs a little something.... more. Perhaps I would have tried walking to the right a little bit to get the water jets on the first third and the tower on the second third - trying to separate the two a little.
Then I would be tempted to edit the jets in Photoshop so that it looks as though you could see the top of them. I wouldn't try to make the jets and the tower the same height, I think that would look a little too contrived.
Hope this helps.