This has a lot of very cute ideas! You seem to have a good ear for melodies and there's also a lot of nice accompanying parts, especially in the last track. It sounds very cute-sy, sort of like in the good old N64 days where games were bright and colorful and fun (or maybe it was me being younger back then, who knows).
If I were you, I'd try to focus on improving the sound quality at this point. Some instruments could definitely use some better sounding VSTs. Others, especially some instruments in the last track, already sound pretty good, but could maybe use a little more dynamic range. Also, water and wind effects were pretty nice.