Quick lesson ....TAKE YOUR TIME......
Paint is 90% prep work (note work not fun )....then putting on color is a breeze.
First lesson is learn from others...READ...everything you can find. 1:1 or model, it is all the same jobs...just a diff in size!
look up the paint "masters" Mike Learn, Mike LaVallie, JoAnn Bortles,Bob Downie.......all have great airbrushing books
and are a great source for special jobs.
But just as in real estate there are 3 words that sum it up:
PRACTICE, PRACTICE, PRACTICE!!!!!
now go have some fun!!!!!!!