It's been a long time since I tried to spray some of this paint. My
first question is why bother? There's hardly enough in one of the
teeny bottle to paint anything very much with an airbrush.
To sort of answer your question, thin the paint until it will come out
of our airbrush, by trial and error. Keep in mind it will be pretty
thin runny and won't stick all that good on anything. What are you
thinning it with?
My advice would be to use some real paint that is intended for
airbrushing, such as Floquil or one of the new acrylics that don't need