Eye primer is super important to keep shadow in place all day with no creasing.

Brushes are everything, a compacted poof brush (crease brush) will buff the shadow flawlessly.

Younique has amazing shadows that are pressed and very pigmented. A little goes a long way!

Buff the shadow in the crease of lid (in a half moon shape) avoiding top of lid.

You can use a little more to build up the pigment as much as you want for depth.