For critique purposes, I would suggest using more variations of color. If you look at clouds, there can be yellows, greens, blues, and purples, though they are extremely subtle. I like the brushes you used, though! I like the atmosphere they bring out, especially with the seagulls. Nice job.
I like the brushes you used to accomplish the effects (I believe) you are going for :) And I happen to like the addition of the birds. They make the sky feel less empty.
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Junga
For critique purposes, I would suggest using more variations of color. If you look at clouds, there can be yellows, greens, blues, and purples, though they are extremely subtle. I like the brushes you used, though! I like the atmosphere they bring out, especially with the seagulls. Nice job.