To mark the crease even more I filled it in with a glitter contour, and the sparkles really nailed an effect! And I could go even further with some rhinestones but I called in the night, and that's all there is to it.
But next time, I'll know what to do.
A reminder of what I used:
Primer - High Tech Lighter Platina from MUS
Shadows - Circus, The Orgiginal and Curious Sleek Palettes and Powder Eyeshadow Fame from Illamasqua
Eye pencil - Slim Eyepencil in Sapphire from NYX
Eye liner - Slide on Pencil in Azure (great name!!) and Sunrise Blue from NYX
Mascara - Lash Queen Black from Helena Rubenstein
Eyebrow - Slide on Pencil Sunrise Blue with blue eyeshadow on top
Glitter - Lime green glitter eyeliner from 2True
Over and out!