Cheers guys. The thing was I watched all of Brett Green's videos off YouTube, on how to build a great model, the only thing was that all his work was all done on a 1/32 scale Bf-109. So when I tried to replicate his tips on my 1/72 one, some things just didn't work.
I must of sprayed at least 6 coats of paint on that fuselage trying to get the mottling right. I love airbrushing, it lets you get away with things like that.
@ Delta - I have 2x 1/48 scale Bf-109s on my shelf (a G10 & a G14) but I want to do a G2 next instead.