hmmm… pretty sketchy, honestly. The shape of the spaceship looks a bit too curvy and the colors somewhere look a bit random. I can see the concept though, but it lacks of time and the background also doesn’t give it a sense of spaceship (maybe I’m a bit obvious, but what about a deep space black ?). I think focusing more on perspective, line-art (or outlines) with a more firm/straight or geometrical approach could solve the instability of the drawing.
Thank for comment, I will share some of my work