Would I benefit from liposuction on my neck, jaw, face? (Photo)

From your photos, the short answer is absolutely, yes. At 38 years old you should still have great skin elasticity. Liposuction of the neck not only removes the excess fat, but it gets the remaining tissue to fibrose (or scar up) to the foundational base of the underchin and neck. In young individuals this works very well and avoids the need for a necklift or facelift. Older individuals that have lost skin elasticity and tone will not have such a good result.

Based on the photos, it does appear that you could benefit from some targeted liposuction of your chin area. You do not have a lot of fat, but it only takes a small amount of extra fat to give a fuller appearance to that area, It is hard to see from the photos, but it does appear that you have a small lower jaw and often we combine liposuction and a small chin implant to give a more contoured appearance. Seek a consultation with an experienced plastic surgeon and see what they say.

Thank you for your enquiry and sharing your photographs.
The volume under the chin and it is of concern to you consists of some fatty tissue situated under the skin, some Tissue situated deep to the platysma muscles, the volume of the digastric muscles and the volume of the lower part of the submandibular glands.
Contouring the area to the characteristics that you are depicting in the fourth photograph involves reduction of all these contributions to the volume excess and can be carried out through a 3 cm access incision under the chin. There is no skin excess to address and therefore the facelift would not be of any benefit in your situation. There are no scars around the ears with this intervention