best advice i can offer is use the tools you have and always get 50% down before you start any job. the airbrush is incredibly diverse and can be used in numerous ways. portraits, signs, automotive graphics, textiles, murals, photo retouching and even tanning........ use it for what ever you think can to make money.
95% of the artists i know all have job's of some sort. so keep the job until it gets in the way of your painting business. the fulltime job funds are also a very handy way of quickly increasing the gear/paint/supplies you'll need. i've spent 10's of 1000's on materials and equipment over the years and most of it was bought with slave labour/job money.
its gonna be tough at times, i think its how i came up with my name "starving studios"
