Follow flames suggestion as a starting point.
Cutting the bottom 1/3 of your 'KRC' off with a hard to read script with a drop shadow on it is a bad design decision. Just because you can add an effect to a graphics shop logo ... doesn't mean you should.
That being said, start over, design your logo in black and white (it will help your brain process design easier) and make the logo work without cheap effects like drop shadows ... because afterall, you put that on each side of a vehicle ... your lightsource won't be coming from the front on the driver side ... I can't describe how much that irks me ... it's like having an arrow in the logo that goes from left to right on both sides ... one side it points at the back bumper, the other at the front bumper. Makes for sloppy design work. And change the 'graphics' font, it looks like a freshman college kids attempt at a 'SICK FONT' for his typography class.