1. Prep your lids. “Start by prepping your eyelids with a primer to make sure the shadow stays put and doesn’t crease,” Cosenza says. Ashley used Urban Decay Eyeshadow Primer Potion.

2. White out your eyelid with liner. “Apply white eyeliner from your lash line to right above the crease to help amp up the blue shadow’s intensity,” she says. Ashley swiped on NYX Cosmetics Jumbo Eye Pencil in Milk.

3. Sweep on a royal blue eyeshadow. “Using an eyeshadow brush, apply a bright royal blue eyeshadow over your eyelid from your lash line to your brow bone,” Cosenza says. Try Almay Shadow Softies Eyeshadow in Midnight Sky.

4. Blend on some more blue hues. With a fluffy blending brush, sweep on Bobbi Brown’s Blue Denim Eyeshadow from lash line to crease to create a rich look. Then, add a navy shadow into the crease for depth. Try Burberry Sheer Eyeshadow in Midnight Blue No.20

5. Add eyeliner. “Finish by running a shimmery blue liner over your entire lid, keeping it away from the crease to maintain the two different blue shades,” she says. Ashley used NYX Cosmetics Slide On Pencil in Sunrise Blue here.