Those aren't bad at all, the 3rd shot is well edited with the b/w. Great angle of that car.
One thing, though. They all look a bit similar to each other (apart from the 1st shot), because they almost always show a full car at ground level, about 20 degrees on profile, and all with the car very near the image's edges.
Also, add a bit more focal blur on the shots to add depth of field and make the car stand out more, because GT4 shots with aperture very high tend to look mostly flat.
You should also try to vary a bit on your angles and crop some parts of the car, so there's more diversity.
But good start nevertheless, very good for a beginner. 👍