"The background seems a bit cheesy, no? The hills look like they are getting progressively higher and higher the more they go toward the sun's direction, and the sun, at least to me, does not look big enough, it's like you tried to cram the whole thing in the small space that was left thanks to the hills, and the rays....try not to make the sunrays very noticeable next time, add them subtly, if you absolutely must draw them. If you want to make sure that sunlight is present in your drawing, some shading should do the trick (Always keep in mind where the light source is coming from, be careful when dealing with multiple light sources).
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