Dont paint with any hardware inside, you want just the plastic you are going to spray.
1. Wash with Soapy Warm Water
2. Air Dry
3. Spray 2 coats of Primer, holding the can about 8cm away, and extending over every edge, giving 10 mins between coats.
4. Wait for 45 Mins
5. Apply 4 Coats of colour, same as primer, giving 15 mins between coats
6. Leave to dry for 2 days
7. Spray 3 coats of clear, same as Primer and color, giving 20 mins between coats