How do i get a more defined jawline?

Im a girl to start with, and im really insecure about my jawline ( sorry if this is complicated) but im always staring at my side profile in the mirror, and i get really depressed and other girls who have them are like gorgeouss and i wish i had one like theirs if it makes it easier, google angelina jolie. i want a jawline like hers, and i dont plan on getting plastic surgery i know i cant magically make a jawline but what do i do to make it look more defined? i also have a round face if that helps.