Look at the profile and the front together
Chin projection and the outline of the jaw contribute to different parts of the lower face. A concern that stands out in a selfie can look different in a straight-on photo and from both sides.
Explain the change you want
Try describing it as a shape or proportion you notice. Bring photos that show your own features in neutral light, the details of any existing filler and a realistic idea of how much recovery time you can allow.
Ask about the order of treatment
If more than one area is being considered, ask which change would be most useful first and when it should be reviewed. An in-person assessment can also show when filler is unlikely to address your concern.