You have plenty of potential - just need to do a lot more. Right now things feel a bit derivative, particularly Star Wars-ish with your vehicles. Didn't really see much in the way of characters or environments. Just get crankin...industry work is extremely competitive and all about production, fresh ideas and a slick style...but also about communication and volume. Good luck!
What would Caravaggio do?
Keep on rocking it. Every design has already been done so finding whatever variations you can on ships, costumes etc is the only thing you can do. One thing you should know about the industry is that it's often times who you know rather than what you know.