First of all this is a fantastic photograph of the Steampunk Aviator Custom Minifigure and it uses some great combination of LEGO pieces.
The Aviator helmet is from the Star Wars Naboo Fighter Pilot and the torso from the very rare Star Wars Captain Antilles minifigure. (Should you really be parting him out?)
The legs made by eclipseGrafx are a perfect match, the gas Mask breathing apparatus by Tiny Tactical, and the awesome looking Lewis Gun by BrickArms.
Finally we love the tattoo on the arm, and the face really finishes this custom minifigure off.