UPDATE: broke down and bought myself the Testors Mighty Mini airbrush set. So far, not bad, except the airbrush nozzle broke so I'm only getting maybe 50% of the original force. However, receiving an airbrush has raised a question: what are the perfect ratios of acrylic paint to thinner? I've heard 3:1 and "to the consistency of whole milk", but neither of those really help. Also, should I use thinner or water? Some advise thinner, but others recommend water. It's really starting to confuse me. Any advice would be greatly appreciated soon.