well rims look very big , i would lower the car first , a mk1 is a small car keep it like this and with the wheel size you have it looks like a jeep
also the hue color on the wheels needs to be canged to a more blue-ish (like the ori wheels had)
the front lip is a good idea i would suggest you make it in 3 pieces for realism.
i mena at the front corners brush a black line so the front lip section is separate fron the fender flares , but it still flows like this
headlight tape looks tiny and it stops on the headlight , where it should disapeir in the black outline of the lenses ..
you also should try to play with darker and lighter area's on the tape
on the skirt loose the black holes , they make it look unrealistic , i would even make the skirt a bit thicker (more downwards)