I’ve currently made 5 showcase builds. The cars are not my models apart from the Nissan GTR R35.
Take a look 
Nissan R34 (Artblox Inspired)
Nissan R34 (KVERTH inspired)
GTA Garage build
Corvette C8 Build 1
Corvette C8 Build 2
Feedback is appreciated!
I see nothing wrong with this as it is already amazing!!
Smoke would definitely improve this (in my opinion).
Something about smoke being around the bottom of the car would seem more engaging.
Yeah I could try that in the future, thanks for the feedback!
Looks very realistic! 
Apparently, the shadow of the car was not quite clear if the light is very bright.
I marked it with a red colored oval. 
Btw looks great!
Yea I don’t exactly know why but I tried getting the shadow to show properly but I couldn’t. I’ll try another way and I’ll show you the outcome if it works.
This is better than the first one!
looks very great!
Nice build it took sometime! Hope you get better at it!
Looks great! Keep up with the breathtaking builds! 
