Here a link I found below.
The spray with cleaner is optional.
But
Any grit that is on there will be ground in.
So get it as clean as you can.
Then buff (careful on corners ,curves on raised parts). as allready suggested
And then the wax coats and protects your hard work you have done.
Link:
https://thenewswheel.com/6-easy-step...xing-your-car/
.