Aparently this
https://airbrushes.com/product_info....oducts_id=1110 is quite a good brush for the money, I think it was Tel who said it was nearly as good as some of the really expensive kit.
I'd recomend getting a small compressor of ebay or similar. Something with a air tank and resevoir on it, like a pancake compressor can be had for as little as £25 and will be soooo much better than trying to use compressed air cans!
Good luck!