When doing smokey eyes, do I....?

Defiantly put the white/base colour (can also be a creamy colour) on first. Then you put the darker shades of eyeshadow on, to get the smokey/blended effect then it all depends on the size of you brush. All these videos go on about what brushes to use, like MAC, but to be honest any half decent brush will do, dont feel the need to start buying expensive brushes. Ive only ever had one type of medium brush, and ive used it for years and it certainly does the trick for me.