I would maybe make the title a brighter off white or have the helicopter darker right behind it. Its a little close in value. Maybe make the sky a little cooler to push it back.
I'd have him sitting on something. Everything looks a bit floaty at the moment. If you had a bench mostly obscured by shadow, it would really help the lower text stand out as well. Other than that though, it's a really cool piece! I'm really digging the lines and shadows!
Nice colors. Yeah Jeff's right, I was gonna say everything is too floaty. I mean if you would just draw the whole panel on the side of the plane, that would block out the missing bench. I'm guessing you didn't do that so the dark interior will make the type pop more, but you can just apply a gradient to the side of the plane. Top type looks too squeezed in. Watch line breaks and spacings too. Lastly, it's just a personal thing but it looks more like its death from below cus he's shooting up.