Always ensure the surface is clean of contaminants and dust. Sanding any surface too smoothly can reduce adhesion and create application issues like orange peel.
Sand with no finer than 220 grit.
Clean using 50/50 mix of denatured alcohol and water with maroon non-woven pad. Sand with fine (220-320) foam sanding pad or maroon non-woven pad.
Always test first.
Sanding Between Coats
Using fine (220-320) foam sanding pad or gray non-woven pad.