When I was young I used to love doing plane models, little plastic models of planes that you have to glue and paint. The best way to pain those was with airbrush because you can paint really thin strikes and because you can increase realism to your work.
Now I got a really cool collection of war planes around my house, I just don’t have more because I stopped building planes models. If I didn’t stop building the models I wouldn’t have enough space in my house to keep them.
I still do things with my airbrush and one of them is paintings, with the airbrush you can paint really perfect drawing, if you are good at it you can almost mistake the paintings for pictures.
Another thing that you can do with airbrush is Airbrush Tattoos and like all the others these also look quite realistic if you got a good artist working with the airbrush.
In fact you can see a lot of airbrush art on the internet, a cool place to find such information is at stumble, stumble has loads and loads of airbrush paintings for you to delight your eyes or even have new ideas.
All the best and good drawings.