For what its worth, I think it's wonderful as is. I wouldn't crop at all off the top-- the black field above is needed to balance the clouds. If you did crop right you could take a smidge, ca. 1/15 or less of the whole width, but no, leave it. Beautiful!
Best regards,
James
Works fine for me, too. I don't see a need to crop at the top. If you cropped about an inch at the right it would give it a different feeling, but I'm not sure which is better.