Is my mid face longer than ideal? (Photo)

 Hi, I have performed many facial shaping procedures over the past 30 years.  From the photos your cheeks lack definition and angularity and the chin is quite weak.  These combine to create a square shaped face.  It's not that your mid face is too long, it's that a weak chin makes the lower face appear short as described below.  Your face does not have "jowls" which are the primary indication for some form of SMAS facelift for which you do not appear to be a suitable candidate.  Based upon my beauty principles, men look chiseled and handsome with angularity in the cheeks, chin and mandibular angles.   The following procedures would create a more ruggedly handsome face.
Cheek augmentation with cheek implants to add angularity to the cheeks and mid face.   I have performed many Chin Augmentations using silastic chin implants for over 30 years.  When the chin is weak, this creates an imbalance making the nose appear larger, the mid face top heavy and the lower face look short that de-emphasizes the lips and allows early formation of a double chin.  Chin augmentation using a chin implant will add projection to the chin creating harmony and balance to the lower face.  I have found that placement of a silastic chin implant, through a small curved incision under the chin (also allows excess skin removal) to be very safe, quick, highly effective and far less invasive than a sliding genioplasty.  I perform chin implant surgery in 30 minutes or less, often using a local anesthetic alone.  In my opinion, you are a good candidate for chin implant surgery.  
Chin augmentation, using a chin implant, to add projection to the chin creating harmony and balance to the lower face.  
Hope this helps.