Step-by-step: Overcome the complexities of reference material
1 As with most drawings, I start with some kind of 3D render in 3D posing software to help establish composition and form. This gives me a lot of the information I need, but the reflections on the weapon are too busy and don’t have much visual impact. 2 I use Photoshop’s Stamp filter to convert the image to black and white and draw over the top, erasing much of the unnecessary reflected detail. I keep a few touches here and there that I think keep the device looking real, such as the reflection on the lens. 3 Finally, I introduce colour. The colour of the lighting in the scene will be largely reflected in the weapon’s surface, but I do like to show the viewer the object’s true colour by having a little of it peek through at points (along the top, in this instance).