Should have used a more aggressive (i.e. one with better lines & sits lower) rear bumper. The work looks nice, but the finished result is terrible. I don't mind the flares at all, I'd love to see more shots of the car just out of curiosity for the front end & wheels. Whoever built this car doesn't share my tastes, but the work/craftsmanship looks like good quality.
If that were my car, I'd...
1) remove rear spoiler
2) use more aggressive rear bumper
3) go with a center exit exhaust instead