yeah, the render does look kinda slapped on (and it's also a bit choppy), but it doesn't bother the overall look of the tag too much imo. nice colors, text, lighting and effects. I like it.
I actually don't like this tag sorry the background is nice, but the headlights on the car are different colors and ones bigger than the other .. the render isn't cut right I can see the sharp edges and its not smooth... maybe if you fix those things I would like it but this render doesn't look like it goes with your background at all =/