The first thing to say is that getting a decent airbrush and compressor is quite an expense to initially set up. I would suggest asking somebody who has one to try it out before buying. However once this is paid for, and if you look after it properly it will last you forever.
There are 2 main reasons to use an airbrush in my eyes and they are speed, and the smoothness of the coat of paint.
Anyway enough of that into the step by step guide.
Undercoat: So to start my devilfish I went with a standard GW black undercoat it’s important to get a good coverage on here due to the fact you are using thin paint through an airbrush and it won’t cling to any non undercoated bits.
Basecoat: For the base coat I used Vallejo Model Air, Cam Light Brown. The great thing with using the model air range is that you don’t need to thin them down. I spray the full model with this.
Masking: Using masking tape from any hardware shop I cut to the shapes I want and make sure to take a bit of the stick off of this. It is important to allow proper drying time between coats of paint or you can end up with a mess.
Second basecoat: Once you are happy with the masking you can then put on the second basecoat to finish the camo. For this I used Model Air Dark Sand. Once dry take off all the masking tape and you will have the finished camo basecoat.
Engine parts: I then use GW Chaos Black, with a small amount of Shadow Grey mixed in and diluted with airbrush thinner and airbrush this onto the exhausts and engine parts as well as the weapons.
Lighting effect: For this I use 2 layers of airbrushing 1 of diluted GW Sybarite Green over the lit up area, I then use the same colour but mix in white at a 50/50 ratio and spray this on a smaller area right on the light itself.
Chipping effect: To get the chipping effect I use a sponge and plain old Chaos Black, once I have done this I paint some larger areas of black to show bigger battle damage. I then use a Boltgun Metal to paint inside these bigger areas to show the metal structural makeup of the tank.
I then finish off the model by highlighting the lighting effect and black lining the armour plates.
So here we have the finished model.
I hope this has been useful, any comments are welcome, and also if anyone would like me to do a tutorial on anything else please let me know.