As someone who loves Metroid, I'm biased to love this MOC. But from a critical standpoint, there is a glaring issue with the MOC. Some parts of the back don't look very good. The back of the head and shoulders, to be exact. The duplo pumpkins look good from the front, but they need more coverage on the back. The head is a little better from the back, but still needs a bit more coverage imo. It just looks a bit too flat.
But still, this MOC is great, even without bias. Especially from the front.