Can i, should i polish my basecoat? I JUST PAINTED MY CAR BLACK, I GAVE IT 2 COATS...

I JUST PAINTED MY CAR BLACK, I GAVE IT 2 COATS , BUT IT STILL LOOKS UNEVEN, I SPREAD IT EVENLY BUT STILL, I WET SAND IT AND ITS SMOOTH, IT MORE ON THE HOOD AND ROOF, I USED A GRAVITY SPRAY GUN. IF I POLISH IT WILL IT HELP, I STILL HAVENT PUT ON MY CLEAR COAT, CAN SOMEONE HELP.
I want to replace a wall hung toilet.?
Answers:    Manufacturer recommends not to wax a unsullied car for close to 6 months. Also the if you polish your car up to that time clear coat the clear coat won't stick to the paint. Hope this is helpful
Smell coming from sink drain when hose down...