The way to get super smooth, silky eyeshadow is to create a smooth canvas FIRST. Applying eyeshadow onto bare skin dooms you from the start ALL of the products & brushes I am using are linked to this post in my LTK in my bio!
Prep Plus Prime 24-Hour Extend Eye Base by MAC for Women - 0.4 oz Primer
Master Mattes® Eyeshadow Palette: The Neutrals
Double Wear Stay-in-Place 24-Hour Longwear Concealer