A play with different effects to try and achieve some feel of motion. Thought for a while about what I could draw to have some motion effects...but let's face it, there are not many things that are faster than a space ship? :-)
I would go with a slightly longer stretch of the lights around the ship, more streaking stars/planets, but other than that I think it looks quite impressive.
P.S. Your Voyager is now on my desktop. I am so jealous you can draw this way.