Quote: "Most Visually Stunning Game Guru Max Graphics Demo"
Quote: "I'm still learning."
Some pointers I can give you: Never use the same texture for both floor and ceiling like you did in that warehouse of yours. It always looks off. And you will need to do some actual level design.
We all start somewhere but people usually don't announce that they make the most visually stunning thing in something they have no experience with yet. The stock props are okay, don't get me wrong, but if you want to make something visually stunning, as you put it, you will need vastly superior assets than what is currently on display here.