Hi, i tried spraying my paint on a test strip and the paint turned white after drying. why is that?

There is too much humidity and water vapor gets trapped under the paint, turning it white. All you can do is sand the area down, wait until the humidity is lower (under 50%) and respray the area.

This can happen in your clear as well so be careful not to paint on a hot or humid day.  If you live somewhere where the climate is always hot try late at night or early in the morning.  If you live in the tropics where it is always hot....forget about your car and go surfing :)