Your end result is only in the beginning stages of paint. With a simple search on How to Paint for Beginners you'll see that "fish eyes" are a huge beginner mistake. What are fish eyes? When oil or lubricants sit on the surface of your car. Well its easy enough to get some Valspar 170 Aqua clean and wash the surface down with a rag prior to and sanding, or scotch bright. Now easy enough right? No, if you're painting or spraying in an area with with any of these products being used in the past its contaminated. If you've used WD40, and oils, Armorall wipes, any cleaners, etc. in the shop, garage, or paint booth you need to give the environment a good wash down. With some simple soap and water and a pressure washer. Diesel cars and having a gas car ran in the area for a long period of time can also give out fish eyes. Make sure you give the car and environment a good half an hour to stay turned off in the spot prior to painting so all fuel and contaminants are free of the air in the shop. To prep you'll need to do the following.
1. Clean all the area. A wax and grease remover can be pretty labor intensive. If you don't get all of the cleaner off you can run into the same problems as if you had wax and grease still on it. I use at my shop I work at Valspar 170 Aqua clean. Its an extremely water based cleaner that you can even get away with just simply spraying it on and sanding it while wet into the paint and clear with no problems.
2. Sand the clear. A good rule is if its shinny it won't stick. Any clear coat with a smooth shinny surface will allow you to peel the paint or clear coat of like a sticker. Use a 320 grit sand paper to get all of the clear to a dull finish or a red scotch bright pad.
3. Make sure you have a good tack clothe to dust the surface. Take a air blower and run it at 1/4 max pressure and lightly rub the top surface off while you blow over the tack clothe. This will remove all and any dust from the surface, and stop any dust from resetting onto the panel or car.
4. Double check all corners, lips, and surfaces to make sure they're good and dull so new primer, sealer, base coat, and or clear coat can stick good to it.
Good luck!