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I think it's perfectly well exposed, I don't like the cropping very much though. Almost impossible to compose fireworks of course. Think there's too much going on accidentally here. The smoke works well with me.

Perhaps you could try to use a sturdy tripod and camera with a wideangle lens pointed higher at the sky. This will create more space around the explosions and give you more room for cropping!

Good luck and thanks for sharing!

Pim