Backyard paint booth
I started doing a little paint work on my Duster. Nothing too major. But I found elevating the car (jack stands or ramps, or both) really helped things alot.
For doing the door jambs ect. Get a little detail gun. I bought a decent one from eastwood for like 40 bucks. Works awesome! Its so small and easy to control. The gun should come with instructions for your psi settings. Always set the psi while pulling the gun trigger too.