What could be causing one side of my face to appear irregular, and what steps can I take to address it?

Everyone has some degree of facial asymmetry. It seems like one sides of your face is lacking a bit of volume. This can be helped with injectable fillers or fat grafting. A well skilled practitioner should be able to resolve your issue. You can also create and enhance the ''triangle of youth'' with these methods, which gives the face an ''attractive look''.