I am currently building the Audi R8 following this tutorial: https://www.youtube.com/watch?v=ymcvjUTf14I

I am having a problem from 32:40 to 32:45 where the person selects the faces, extrudes them, then scales them in.








Here's how mine turn out. I think it is a problem with the orientation of my faces and they might not be straight. I have tried to mess with the scale tool so that it is oriented according to the faces but I can't. How would I fix this problem?