Hmmm looks good, im not sure how much I can help you with this syle of art since i almost never attempt it. But I would say just throw in other colors probably a different shade of orange reddish yellowish for autumn colors. Also the white dots in the background are all flowing in the same direction, might want to try moving them in different ways. And if you want to get very picky the white glow from the sun the two sides arent symetrical, but I didnt notice that until much later
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