Quoted from gmkalos:

A soaked paper towel is better than just about anything else I've ever tried to use, every washed or new tac cloth always seem to have fuzzies on them somewhere and always seems to catch on some wood gi lamp hole or something. Fold it 4 times and soak it in naptha liberally (should be dripping wet) you'll be fine.
You want me to walk you threw it, spray that 1st can on there about 80% so you don't get any splatter. The first coat should be medium and walk away for a few mins (3-4) then come back keep spraying another 2-3 complete coats should empty out that can. Let that sit up overnight, hit it with 1,500 next day wet sanding then spray 2 more cans the same way letting that first coat firm up for a few mins, also waiting about 5 min between cans to let it firm up more. Let it sit again 24 hours and finish block wet sand with 1,500-2,000 grit (use a small block 2"x3") then hit it with a firm pad and the Mag Ultimate compound.
spray in rows like this guy, SM2K sprays out just like a gun with a wide angle try and keep your tip clean every few rows hold the can level and spray out some away from the pf (on the wall) to just to clean the nozzle.