Do I need a chin implant or neck lift?

An examination of you would provide more information to give you the best advice, but based on your photos, I would say you would be a good candidate for chin augmentation with an implant and liposuction of the neck (under the chin).  Both of these procedures would give you a more defined neck line and balance your profile appearance.  

It looks as though you may benefit from liposuction underneath the chin (submental liposuction) - that can be paired with a chin implant if you do want a more pronounced chin.  An in person consultation would help to determine exactly what procedures would be most beneficial to you.  I recommend consulting with a board certified facial plastic surgeon. Good luck with your search!Mark Petroff, MD