yeah, it does look a little off but It should actually work. first the head is actually sitting a little bit to low, the neck should be longer and the head should sit higher.
also, with the transformation it actually should work. when it transforms to fighter/Gerwalk mode. the blue and red highlighted parts move forward in the direction of the blue arrow until they're far enough forward for the head to be tucked down, then the red panel slides back in the direction of the red arrow until it meets up with the cowl on the head, covering the face.
also the chin and forehead close up around the big "eye" structure, making the face smaller. (sort of a mix between the VF-25S head, and the head of the Type zero labor from Patlabor 2 the movie.)