Hi Phiya... The baby in this shot is adorable!
There are a lot of glaring issues with it technically, though. First...it looks like you shot with a pop up flash aimed at the baby? Those catch lights (deer in the headlights) dead center in his pupils are a give away. I would expose for the baby's skin and try to get more directional lighting, even if that means bouncing the little pop up flash you have with a card or something.
It's also underexposed, dark, and cool. That means that you need to either lower your apreture, lower your shutter speed, or raise your ISO to get a better exposure. And the coolness is just a matter of white balance which can be easily fixed with a digital grey card in post processing if you shot this in RAW. Compositionally, it's lacking greatly because of the tight crop, and the "story" being told is not at all what you were aiming for.. (IE the vampire comment >< )
Keep shooting though, and looking forward to seeing more of this cute baby!