I don't know if it's the tutorial but this is the second model I've seen and I have the same comment. The edges of the doors and the hood seem too rounded and/or the gap is to wide. I havn't seen the tut or done it myself but I think it would look more realistic with tighter, less rounded edges. Here some reference links. Other than that, you really did a great job.

https://users.wfu.edu/rudni5/images/F...ena-03_800.jpg

https://www.rsportscars.com/foto/04/f...60f1_front.jpg

Hope all goes well for you at the studio.