The moment the game starts that intro music sets the perfect mood and the level design, colors, everything looks wonderful and makes me want to explore. I would improve the 3rd person controller as that's the only hang-up, and then I would give some sort of audio/visual indicator for the items to collect, a small particle effect around it, and maybe a small humming as you get closer to the collectible would help players find the items and be drawn to them.
Great first project, following to see what you do next.