wet sanding/polishing clear coat to eliminate orange peel effect....

if this is your first shot at wet sanding I would not start with 1k grit instead use 1500 first then go to 2000. 1000 will cut fast and if your not used to wet sanding you could cut through easy.
Do a small out of the way flat level spot first to get the hang of how much you need to do to level the paint. if it is a urethane it may still have a slight wave to the paint even after your done,
use a pliable foam pad as no pads will leave finger marks and a firm one will leave edge marks. Do not wet sand where you do not want or can not get a buffer into. tape off edges and do a panel at a time cover the rest of the car as much as possible. this is a time consuming task to do it right and also expensive to have done.
a water blade is handy to have to wipe away slurry while sanding. keep a spray bottle of water handy. dirt and debris build up while sanding IS scratching the paint. check your work frequently better to do more since you can not go backwards.

clean all compounds from paint and gaps quickly it will harden like concrete in a day and become VERY hard to remove.