Engine Cover removal

This is kind of a stupid question, but im just asking it so i dont mess anything up. Ive noticed a lot of people have taken off their engine covers( the black cover that says 2.5 on it and NISSAN).I kind of like that look, I was just wondering if all i had to do is unscrew it, nothing else. I didnt know if something was connected to it or something crazy, so i just wanted to ask. The other day i tried to unscrew , it was kind of tough, but i think it was because my engine was still hot.

ther's only three screws that hold that cover on, there's one on the center intake manifold, and two on each side of it, it's pretty simple