The pictures where actually at my dads shop (he lives next door). Prep is the hardest and most important part actually. Buying the good materials is a must if you want a quality paint job. The good high solid base covers so well and a quality clear is just easy to spray. I used the brand prospray.
My prep for that bumper included:
Washing with soap and water
scuffing with a gray scuff pad
washing it off again and then wiping it down rubbing alcohol
2 light coats of adhesion promoter
2 coats of epoxy primer
Wet sanded the epoxy with 600 grit after it dried
cleaned and wiped down with wax and grease remover
2-3 coats of base
2-3 coats of clear
No sanding or buffing the clear yet and it really does not need it since that clear laid down so smoothly.