yeah i see what you mean about those creases. Those creases arent as clearly defined on my reference images i got (actual car pictures), i should have gotten more references as i only had about 5, plus my T,B,R,F,Bottom views.

I think the car is pretty much done as ive wanted to try other projects for a while. but ive wanted to work on renders for a while and i leanred a lot for it. hopefully i can get UV texturing done next project(as i have no idea how to do it yet).