Get the car clean, wash, dry, wipe, whichever works best for your application.
Then if it were me? I always tackle the hardest parts first and if you have Type II water spot etchings, then that's going to be the hardest part to do unless you have milkshake stains in the headliner you haven't told us about.
Then I would get some painter's tape, place a tape line down on the hood or trunk lid and do a Test Spot on one side of the tape line and dial-in a process that works perfectly. Then I would duplicate this over the rest of the car.
If I were doing the entire car in one day I would wash and dry the car the day before so it would be completely dry by morning and then I would start working at 8:00am sharp.
Removing the water spots our of a 2010 Camaro, assuming there on at least all the horizontal surfaces is a solid detailing project that will take you most of the day.
If you're new to detailing, maybe just do your test spot and tackle a single panel from start to finish, like the hood. Then time yourself and see how long it takes to go from when you first walk out into your clean garage with your washed and dried car and start taping off any trim or edges and continue timing yourself till you make your final wipe to remove the wax.
That will give you an idea as to how long it will take to do the entire car.
Doing just the hood will take you a minimum of about 3 hours from start to finish and that's if your fast at this kind of work and your good at this kind of work, (that's 2 things), and you don't lollygag.
My guess would be for the average person, not a Pro Detailer, it would take from a low of 3 hours to a high of around 6 hours to get to where you've,
- Tested and proven a system
- Duplicated the cleaning step to the entire hood - cleaning means removing the defects
- Polished the entire hood to a high gloss
- Sealed the paint with a car wax or paint sealant
- Wiped the wax or sealant off
- Removed any painter's tape
- Made a final wipe
Just a suggestion.... tackling an entire car and trying to buff it out from start to finish in one day can be done but it can often turn out to be a bigger job and take longer than most people think.
