when i turn symmetry back on, this is the result, i found that parts of the neck didn't meert in the middle, to solve this, i selected the edges all around the face, and pressed the "Y" next to were it says "make planar" this aligns all the edge in the Y axes, becasue the majority of the edges were already in the correct place, the few that wasn't were pulled into the right place.

this image has been turbosmoothed.