My first and second MOCs. Any improvements?

The blue one is supposed to be porsche 911 gt3 and green one is supposed to be mazda rx7. I built the 911 first and just built rx7 today. I suck at building the rear accurate and any suggestions on how to improve them? I used a few of 77238 and some spare parts, and rx7 is from 77237 with some spares. submitted by /u/Confident_Profile698 [link] [comments]