Your implant position is high, but some degree of this is normal right after surgery. As your tissues heal, muscles stretch, and scar tissue softens, implant position will drop into place behind your breasts, filling out your ptotic (drooping) breast skin and reducing the fullness that is presently seen just below your collarbones.
Your surgeon may have taught you implant movement exercises that will help your implant pockets remain soft and non-contracted, and he or she may have you wear an elastic bandeau for a portion of each day to help drop implants into position (I have my patients wear their band at night and go braless during the day so gravity can also help implant position).
It will take several weeks to as long as several months for your implants to drop into their final position. Be patient and follow your surgeon's recommendations. This will continue to improve over time, and I believe you should be at the size you wish when implants have properly filled their optimal position behind your own breast tissue. Best wishes! Dr. Tholen