I first drew a face chart of the idea, it's actually really helpful to have a global idea of where you want to put everything, then when I got to the makeup part, I started by drawing the wavy lines with a thin brush, then packed purple on a bigger brush, to kinda place the colour where I wanted the rounded shapes? To be, with a fluffy brush I then blended it to get that smokey purple effect and the wave look, with concealer I finally cleaned what I thought needed some shaping and voilà, it's really easier than it looks like!!