Hey this is pretty cool! You have a good understanding of lighting, I can clearly see the directional source of light, and you've got some nice contrast to differentiate areas of different tones. I personally feel like the box itself is at a slightly weird angle, and I feel like it could have some gritty details on it, like star stickers peeling away, or chipped wood? And I love the concept and the character design, but I think his pose is far too stiff, it would look infinitely more haunting if he was in some kind of twisted and uncomfortable pose, or at least the classic "boo!" pose, if you know what I mean. But this is awesome, congratulations!