This one, though I never successed in finishing it.. started out looking damned cool.

It's just an Incubus mech, turning its handgun against the viewer. Almost looks like it's doing it casually, doesn't it? I'm pleased with this, even as a failure, as for once, I managed to beat my problem with perception; the handgun upper arm can barely be seen, and appears to be appropriately sized for the angle and positioning.