Consider uploading hand sketches or a quick study model of all your first ideas. You can scan these drawings or take photos of your model.
Brainstorming ideas is your first step towards making an informed decision to the design solution. Learn more about that here.
Run your type through Microsoft Word it will help with the spelling errors.
I see that you are addressing the traffic flow flaw by providing a food court. Will this mean a very limited menu? restrooms accessible from the cafe is a good idea and booths will address the sound issues. Keep up the thoughts. How will you address the remaining flaws?
Nice simple flow diagram to think about the traffic patterns through the space. Oftentimes, simple (low-fidelity) drawings like these are the most direct. Technical drawings always suggest that decisions have been made. In the data collecting phase it's good to keep it simple and direct.