I also struggle with my lipstick. It just seems so basic on my lipstick, just adding some color on flat lips. I did some research and I find out there is something called contouring for the lips. I mean, crazy right? Well, it works tremendously. Just hear me out. All you need is a darker pencil to outline your lips and then fill in the center of your lips with a much lighter lip pencil. You can add the lipstick now. Instant fuller lips, as you see in the picture above!
Image Credits: 3 Steps For Contouring To Get Fuller Lips