Now get the dust from sanding off the case with the terrycloth rags. Spray cans have instructions on them which you should read. Pay attention to the temperature. Don't even think about using a heater to heat your garage to paint in if it's the middle of winter. You can blow yourself up.
Ventilation is also more than just a way to keep from passing out from fumes.
With decent ventilation, the paint will actually be able to dry normally. Shake new cans for a good while, then spray them for a few seconds AWAY from the case parts before you start using it to clear the unmixed paint from the nozzle. When you're spraying, don't be afraid to under-do it. In fact, plan on using two HALF-coats to everything you do. If you spray very lightly, give it about 5 minutes to stop looking wettish and then spray again, you'll be a lot happier than if you try to get a solid coat of paint in one pass and the paint starts to run.