This looks awesome man, really liking the look on this Swift!
-Agree with Best with the background looking off, I think you just have to move the background higher, right now the rear wheels is hitting the studio background.
-Shadow, I think you should of used the shape from the base as your current one looks scattered.
Also the car is slightly blue-ish white, but the background is colourless, so I would remove the blue from the car.
Really good work though, awesome, keep it up!

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