Thank you for your enquiry and for sharing your photographs. In general, a mild midline depression with relatively good central contour, combined with some laxity or excess volume laterally, is unlikely to improve spontaneously over time. In situations such as this, a targeted revision focused on the neck alone is often sufficient, rather than a more extensive procedure. I would strongly encourage you to discuss these concerns directly with your original surgeon, as they are best placed to assess the details of your surgery and your current anatomy. This type of contour irregularity can occur more readily in the presence of more significant sun damage, which leads to reduced skin elasticity in the lower face and neck and can limit the ability of the tissues to redrape smoothly.