(disclaimer: AIM judge review here! these are just my opinions and thoughts, you can take from them whatever you like! music is subjective and all that. <3)
what a pretty, serene, understated little piece! love this emotional harmonic language and all those heart-wrenching little moments in the melodies when they go up high... and the key change! really nice. one thing that's kind of notable is the whole instrumentation sorta occupies the midrange and mid-high range. being so lacking in the low end, it could've been a powerful moment to use that in the piano for a climax or something; but there's nothing wrong with the structure here either, just a thought about the chosen instruments. to me, the music feels somewhat more somber than i would expect from the bright, fanciful fields of adventure in the artwork you chose, but it is also peaceful and serene, and i can still envision a context where this would work well, especially with regard to the feelings of the two characters depicted. regardless, this is some solid writing!