The proportions are a bit strange, because you did not lower it, but added things to the body.
And the car somehow seems too big in this background.
But the mods to the car are great.
Maybe the headlights are toony, but the rst is well done and looks good.
Looking pretty cool there man. I like the background and style you've given this. I think you need to desaturate the rims a tiny bit, they have a little bit too much blue hue in them as it is now They only stand out because of that. Also the headlights look a bit toony, but they still look alright. I think Glacius has done a LED light tutorial somewhere, that would be worthwhile checking out