Tips:
1- Once you have applied the prebase in case you need it, you should mark the concave of your eye whit the shade of the tone of your taste ,as advice usually opt for dark tones such as brown and black to give more depth to your look.This work should be done with a fine brush that allows precision or with an eyerliner .Mark the concave as you prefer.
2- Blur the upper edge of the stroke you have made in the concave using a special brush to blur. It is important thet this work be done only on the upper edge and not on the rest of the line , do not forget that the purpose is that the concave look well marked. Choose a shadow in a lighter shade that you like and contour the upper part of the dark stroke, blurring it.
3- Delinate the birth of the eyelashes with an eyerliner, then put on the mascara to finish the makeup and give your look a striking, dramatic and perfect appearance to enjoy the night.
Also here I leave a more detailed mini tutorial on how to make the cut crease:



