Helicopter - Practice

Just doing a little more line art. I have a pretty good grasp on perspective, so I thought I'd try giving a shot to a rather complicated vehicle. The hard thing about a helicopter is the round body and rotors make perspective difficult, so I did it very carefully. Almost gave up, but I've come to learn if I almost give up on something, it's going to turn out great if I keep going.

Fun Facts:
Here's two "building" steps

Base Perspective Layout: [link]
Rough Outline:[link]