pretty neat design. But I see a few inaccuracies. in the future I advise you if you have some idea first print on the car and you can kardce sketching your ideas. If you have a problem with perspective sketching the first draft zrobioniu do another on the other side and try to improve perspective. Then again applying another card or folding it in half. my advice print a car for half of the card makes it possible for one kardce do four sketches.

thanks for the tips, the next I fancy more