There's really not anything more in the background. In fact, in the actual game, you can't see the sky from this angle, but I made the walls shorter so it doesn't feel enclosed. I think the amount of detail on Barney is an appropriate amount, especially relative to the background, as it draws focus to him, the most important part of the composition.
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Nice, but you should add more details to the background, and less details to barney
There's really not anything more in the background. In fact, in the actual game, you can't see the sky from this angle, but I made the walls shorter so it doesn't feel enclosed. I think the amount of detail on Barney is an appropriate amount, especially relative to the background, as it draws focus to him, the most important part of the composition.