Thank you so much for your advice, everyone.
My current piece is 580 words, so although the length isn’t the issue, it is still filled with many flowery words and metaphors. Of course, I don’t want admissions to think of myself as pretentious and confusing, so I will try to edit it into a more concise and straightforward style. Although nobody has ever described my writing as pretentious or confusing, I fear that they will due to its very poetic style.
I’ve always written for myself and found my own writing beautiful and meaningful because it personally resonates me. Perhaps writing for others is a skill that I still need to develop. I will reach out to my English teacher and try to gain perspective on the strengths and weaknesses of my current essay. My school is also offering a college essay workshop, so I might participate in that too.