Contour those eyes!

For a rounded look:

Start by applying a VERY thin layer of eyeliner to the top inside corners of your eyelids. Continue following the upper lash line to the opposite outer corner.

Thicken the line of eyeliner in the middle of your eye.

Use a subtle ‘wing’ at the upper outer edge.

Apply a thin line of liner to the lower lash line from corner to corner.

For an oval look:

Start by applying a thin layer of eyeliner to the top inside corners of your eyelids. Continue following the upper lash line to the opposite outer corner.

Thicken the line of eyeliner at the upper outer edge, but stop at the corner of your eye.

Add a thin line to the outside corner of the lower lash line, but stop in the center of the eye.

To make your eyes appear closer together: 
Apply a thick line of eyeliner to the inner corner of the upper lash line. 
Narrow the line of eyeliner to the outer corner of your eye using a tapering effect. It should start thick at the upper inside corner and slowly thin out towards the outside corner.

You may or may not want to add a thin line to your lower lash line.

To make your eyes appear farther apart: 
Visually separate your eye in to four sections. 
Do not add any liner in the first section of the upper inside corner. Instead, start a thin line at the second section of your eye and continue to thicken the line towards the last two sections. 
Apply liner to the lower lash line, also thicker in the outside lower corner.