Get Sanding Chalk Paint Before Wax UK. If you are new to using chalk paint then i recommmed reading my tutorial about it's important to give your entire furniture piece a nice thin coat of clear wax before you attempt any dark wax. How to use chalk paint®.
While i've heard it advised to wait 24 hours and to add your clear wax before distressing, i pretty much get.
Most professionals recommend that you sand after chalk painting but before applying wax. If you want to jump straight into dark. No sanding, stripping or priming is required. You do not normally need to prime or sand first with chalk paint, but this piece was old and the red pigment was unlike any old paint finish i have.