I've made progress! Actually, I finished out my two Porsches. I showed them earlier in the bare-metal stage (which you can see here) and finally found time to work on all the painting.
A coat of primer, a few coats of color, then all the detail work to be done. I used a beautiful brown metallic paint, and I think it looks fantastic! The color is so rich and vibrant, and the metal flakes pick up the light amazingly well.