I like the direction your current concept is going. Very nice style, stick with it. I have a feeling It will serve you well.
This early in your work i have only a couple of things to say. Keep in mind your composition and lighting. Your objects are looking a bit similar in size. Keeping a distinct forground middle ground and background setup to help make it look that much more spectacular. Perhaps you can consider putting the viewer closer to the action. Lighting also be very important in highlighting the focal points of your image, as you probably already know being familiar with light and color yourself.
Good Job and good luck. I’ll keep an eye on this one.