Here's how you should do it. Look into a mirror and tilt your head up a bit so that the lashline (where liner will go) isn't touching the crease of the eye. Gently stretch your eye outward to prevent blinking. Start lining the outer corner first, going towards the inner corner. Make sure that the line gets thinner towards the inner corners. Now go back to the outter corner and wing the liner out and up a bit for the cat eye effect. If you mess up, wipe the corners with a Q-tip and try again.