I love how the tail curves to meet the curved steem logo. Modify the font and you are really on to something. Seriously though. This is near perfection except for the lettering and the disconnected grey elements on top of the plane. I can't tell you how to make it better, but between the steem logo, and the black part of the plane with grey stripe down the underbelly, you have a near complete design and a prizeworthy contender. But I see your dilema, if you take away the grey elemets of the plane, then it looks like a bird (because you gave up the hard lines on the plane to merge it with the steem logo). This seems like an issue that if you could make the jet look more jetlike without those grey shapes above it, then, well, you get the picture. The grey plane stripe and the grey center steem line are subtle and extremely effective elements to this black and white image. Normally I don't like to mix grey, in the black and white image, but this grey is purposeful with style!