Yet another class drawing! Dude, you might as well as taken an art class. Granted, I'm sure most of us have at one point. I now realize the only difference is the lack of lines on the second one. It really looks just the same in Photoshop. I'm glad you were faithful to what you originally wanted.
It looks like a giant rocket made of many smaller rockets. There seems to be only one exhaust pipe or whatever you call it. It would have been nice if you added color. It's still great the way it is. Okay, that's not a swatisaka.