@AJP what wax everyone using?. I'm an old timer so pardon me
You can go silly with wax, but the Autoglym HD stuff I mentioned is excellent. £40 a tub which lasts ages. Easy on and off. Mix of carnauba and synthetic.
But the finish after the wax will only be as good as the finish you attain after the polish. Autoglym SRP is very good. Contains fillers so works on microscopic scratches that dull paintwork. It can get chalky, so microfibres help.
Better still would be a machine polish.
Then seal it up with the wax.