In order to maximize the eye size, tight-line at the root of the lash-line instead of above. It adds definition without compromising the size of the eye.
One cool trick I've picked up is getting to know your own eye shape. Once you've got that down, nailing your eyeliner can totally change up your look. Makeup isn't a one-size-fits-all kind of deal, especially for playing up your eyes. Maybe it's going for that winged liner look, popping some lighter shades in the inner corners, or layering up mascara on top and bottom lashes – it all boils down to tweaking it to fit you perfectly.