tips for girls with thinner lips?

i’m all for the korean lips right now, but mine are about thinner than average. just by a tad. i bought some cream lipstick from judy doll, but i also have this issue with other lipglosses, anything lip related. how do i get the corners? anyone else struggle with this? thx!! 💋

ALSO ANY TIPS TO GET PLUMPER LIPS APPRECIATED.