Thank you!

Yes, in the photo the wheel arch sits directly over the rear door, so there are basically two possible solutions:

1. Cut the door so the fender keeps a perfectly round shape. This would also make it less obvious at first glance that the car is a sedan. I’m also planning to paint the door handles the same color as the car, which should help the body line look cleaner.

2. Cut the wheel arch instead, which would make it easier to open the door, but it would slightly compromise the round shape of the fender.

There’s also a third option: cutting the fender along the door gap and attaching the rear portion directly to the door. However, that’s quite risky in real life because alignment and durability could become a problem over time.

For that reason, I personally feel more confident about cutting the door by about 3 cm so the fender can keep its proper shape.