Add a gun to indicate the ship’s purpose
This is supposed to be a military fighter so I add a big gun underneath it. I try to introduce weapons when I know that I’m going in the right direction, because anything looks cool with a big gun! I would rather have the canon complementing the design than dominating it. To build the gun I use Photoshop’s Custom Shapes tool, which enables me to quickly place and distort shapes that I’ve already created.