Step 9: Using the gel liner you mixed up earlier and the tapered brush, apply a thick line of black liner along your entire lower lash line. You want it to be thick enough to fall below your lashes, so that when you add mascara it won't disrupt the line.

Step 10: Use your liquid liner to outline the inner corner of your eye. Then add mascara to your upper and lower lashes.

Step 11: To create even more drama and round out the entire eye look, Stapleton applied M.A.C. 1 Lash, $17. These are a short pair of lashes that look natural, but create a dark line along your lash line, which Stapleton says is essential to this look. He then applied M.A.C. 2 Lash, $17 -- a longer, flared pair -- on top of the shorter lashes to create an ultra-feminine, flirty feel.

Stapleton finished off the fierce look with perfectly defined, ruby-red lips.

Step 12: Line your lips with M.A.C. Pro Longwear Lip Pencil, $20, in He Said She Said, a brick red shade. Fill them in completely, as if you were using lipstick.

Step 13: Top off the liner with M.A.C. Vamplify Lipglass, $20, in Tease Don't Touch. To make your lips extra pouty, take a powder that is a couple shades darker than your skin tone and dust it under your bottom lip.

Bring together your #squad, and you're ready to take down your enemies (or, you know, be the most badass b*tches at the Halloween party). And remember: Though Band-Aids don't fix bullet holes, they can patch up your feet after a night masquerading as a superhero in sky-high stilettos.

Makeup: M.A.C. Cosmetics Senior Artist John Stapleton
Jewelry: Rachel Katz Triangle Earrings