Man this will be a long comment to read with so many chops stuffed in to one post.
That Audi, cool and pretty nicely done. Maybe the camostyle could use some contrast and reflections to it. Would give it bit more life?
Bmw is nice, simple and well executed.
Pretty much the same is Peugeot. Proper eurostyle with that lowering though.
Toyota, something really weird on how those tires sit on the ground? Also there is small bit of some other tire in there at the front? Carbon fender is pretty cool, but lacks contrast and somehow just looks bit bleak? That ic is nice idea, but somehow it looks added on visually. Could be done better but not sure how really.
Volvo, on first glance it looks cool. But man those tires! They are not really fit in there. They are just there randomly over the old ones. Rest is pretty cool.
Skoda, shadowing and wheelfitting issues.
That Peugeot, pretty nice. The rearlights could be installed bit better. Also some shadowing to the tires.
Mini, nice start with the fenders. Could use some shading and reflections to the rearone especially. Now they still look bit plasticky, but just white. Not sure if intended to do it? Nice work with rimchoice. Fit well, but could use some work with color and shading to fit better.
VW. Small amount of mods, but those are well done.
Potential here, but really should fix those small stuff. There is similar stuff on many chops like colorbalance, shading and fitting of wheel issues. Maybe you have completely different settings on monitor? One tip is to run your finished chop in much lighter and darker version. That way you can often find stuff that you might miss otherwise.
Keep practising.
