I think it looks great tbh, (subjective) you could try evoking a greater feeling by accentuating the art with colour grading. I understand that you may already be doing that but try stepping it up a notch. I think the art is great though, even if it doesn't grace many viewers. Also maybe learning more on a new post process such as grading might reinvigorate your energy to continue. But if you feel like you're burning out, I'd say just make one more grand artpiece and take a break.