Ski? Water skiing or snow skiing? Makes no sense. Nice pattern though. I wouldn't mind seeing a little more blue, the patches that are there are kind of muddy colored blue anyway. Oh, you probably meant "sky" not ski.
what looks to me is sky reflecions on some building glass ? am i wrong ?
YOu could have improved this by saturating the blue ( more blue sky) and increasing the contrast.
I like the composition and cropping. I always love clouds reflected in windows. I'm wondering if the auto-levels, contrasts and saturation in photoshop would have bumped it up a notch in the "WOW" category.
The title throws it off some. I think you are saying 1/2 empty,1/2 full, SKY. IMO, it would have been more interesting to skew the perspective more. To me, as it is, the horizontal lines look like they were accidently composed this way. They aren't straight but not angled enough to be done on purpose.