I'd rotate the car so it looked like it was sitting level. You may be trying to give it some perspective by tilting it, but it's fighting with the text. As for the text, I'd give it more perspective by having the "3D" part decline to a vanishing point in the center, and commensurate with the plane of the car, instead of to one side. I'd lighten the window on the passenger's side since there's nothing "dark" behind the car . . . a light tint would be sufficient to "color" the glass. And, I'd add some lighter notes to areas like the rims to give it a little more contrast in values, or, change the color of the car to brighten it up a little, unless you've chosen the current color scheme deliberately. The car itself is nicely drawn. I like the fact that you included some interior details. Lots of times a drawn car looks "empty". Well done.