Website UI/Design Suggestions

I created a website using Google Sites (it's for school), and I was wondering if you guys could give me some advice on how to make the home page look better. I prefer not to add in code because it's hard to in Google Sites but I can.

Website Link: https://sites.google.com/ocdsb.ca/abin/home
Headings use Payton One and body text is PT Sans I think.