There are many ways to make your lips look fuller. One way is to apply a lip plumper. This can be in the form of a gloss, balm, or serum. Another way is to use a lip liner to slightly overline your lips. You can also fill in your lips with lipstick or gloss, and then blot with a tissue. This will remove any excess product and create the illusion of fuller lips. Finally, you can highlight the center of your top and bottom lip with a light-colored gloss or shimmery shadow.