As you have brushed it on before you probably already know this, but airbrush light coats first, build up to a wet coat. Also, it will tend to run to the lowest point if you spray too heavily. You can wick away the excess, or just hold the part you are spraying with Future flat until it sets.
REALLY easy to clean an airbrush of the Future if you spray some water with ammonia through it (non-sudsy ammonia is best).
The 48 hour drying is critical. It takes a long time to dry.
On the bench: Academy 1/72 B-17G 'Blue Hen Chick'; 1/48 Tamiya Mustang III; Kitty Hawk 1/32 P-39.
Completed: 1/48 Tamiya P-51D Mustang - 'Show Bird', 1/32 Dragon P-51D Flying Tigers 'What if'; 1/32 Tamiya P-51D Big Beautiful Doll
Group build:1/48 Tamiya Mustang III; 1/48 Tamiya P-51D Show Bird