Perfectly applied eye makeup does not alone a sultry sex kitten make.
Behind the kohl and liquid eyeliner has to be an even-if-you-weren't-here-I'd-still-be-getting-this-lapdance attitude. Not sure how to inculcate losing your inhibitions and believing in your inner fierceness, but at the very least I can offer some tips on how to achieve the look of a temptress.
Next in the routine is my makes-the-biggest-difference-on-Friday-mornings product -- the godsend otherwise known as under-eye concealer. Make sure to spread the concealer not just directly beneath your eye but into the lower half of the dark-circle as well.
Once the base shadow is set and uniformly distributed across the lids, choose your contrast shadow. In the picture above, Scarlett - or Scarlett's makeup artist - went for a very traditional matte pewter color like MAC's "Smut" ($14 at maccosmetics.com). Using a relatively stiff small-to-medium sized eyeshadow brush (I like Stila's #20 Eye Enhancer brush, $32 at sephora.com) apply the contrast shadow from the edge of the eyelid up to the crease in a half-moon-like fashion. Be careful and be symmetrical when doing this; if you go a bit too high on one side, dip a Q-tip in eye makeup remover and correct the error before continuing.
I like to start in the outer corners and move inward, but I've seen professionals do it both ways. It's a personal choice for how thick a liner swipe you want, but there should always be a diminuendo trend - thicker to thinner - from the outer to inner eye. After drawing a satisfactory line, use a small makeup sponge to lightly smudge the thicker part of the line. Make sure the line is still a visibly separate entity, however. If you've over-smudged (it happens), tissue a bit of the excess liner away and start again.