What are my options for a better jawline/side-profile?

To achieve a better side profile jawline, the combination of a sliding genioplasty and jaw angle implants is needed. Both the chin and jaw angles show some under rotation of the lower jaw.

you have an underdeveloped lower jaw. Increasing the chin projection with a genioplasty will 'extend' and flatten the area under the chin since it 'extends' the muscle. As well, jawline augmentation will define and strengthen the lower jawline. Common issue. Also, the frontal view is most critical so consider that fact and include frontal images for assessment by the surgeon