I like how this fit the theme. I'd maybe consider zooming the camera out slightly, or adding some stars in the background as it's hard to tell if you're actually moving sometimes.
I really like the idea of zooming the camera out to convey motion, I hadn't thought of that. I considered having stars for a point of reference, but I wasn't sure how to fit them into the art style. Having a little thruster effect would have been ideal as well. Thanks for the feedback!