I've had some success with Saddle Lac, I hold the can about 8 inches above the work and spray a light coat and keep it moving reasonably fast but consistent, as if using a paint spray gun. I practiced on some scraps at first till I got the hang of what gave me a suitable thin coating. Keep the coatings thin. I usually apply one thin coat, sometimes I apply another thin coat after the first has completely dried, I tend to leave it overnight. I use this method on my back patches and its worked well (if you require a slightly glossy finish). After every couple of passes I wipe the buildup at the nozzle, if you don't do this you can get some splatter which can spoil a job.
I have recently been experimenting with Cyberthrasher's advice with Resolene mixed 50/50, and I apply it with an airbrush. Ive had great results so far. Thanks!