Stick with it. My first model, I bit off more than I could chew...I've only done this for a year and my "skill" has improved greatly. Just look at my first posts about the speeder and my current Buffalo build in the Armor section. I owe it all to the kind people of this forum, my dedication to practice, and PATIENCE.
* if you're truly going to stick with the hobby, grab a Master G22 off eBay and a cheap pancake compressor from Harbor Freight....an airbrush is a great tool and the compressor is multi use *