I have done what both of Eddie and Jeff suggest. Jim's mention of time of day is a good point as well. My paint booth was in my hangar with half a dozen or so fluorescent light fixtures strategically placed for good lighting. It exhausted through a tunnel made from the plastic sheet running to a back window. On the outside part - inside too, I guess - daytime temps are important as well. I found that cool mornings gave a bit more time for the paint to flow and helped reduce the lemon peel effect. For small parts, I would simply paint outside in the morning before bug time and heavier breezes.