0. before anything, grab a beverage of choice :P
1. wash with water+dish detergent ( I know its bad, but its to strip all previous layers of wax)
2. (optional) wash again with car soap
3. Dry car
4. Spot treat water marks with vinegar
5. Clay bar
6. spot treat water marks with a polish such as scratchx or nufinish (optional if water marks dont go away)
7. Wax with meguiars nxt2.0 (cleaner wax so its even got some polish in it too).
8. clean rims, tire shine, clean glass (wax if too if u want).
9. finish your beverage(s)
10. Stare at the clean car