This is something I did pretty quick and it's pretty simple, so if you want to post some feedback in the comments, that would be appreciated!
As I said, it's pretty simple, but for an eleven-year-old, it's pretty good!
I was going to add a patchnotes thing at the start that goes away, but I was cut short by the end of class. I'm currently on a different computer that doesnt have the clipboard saved or the original html, so I can't fix it right now.
If you take computer studies, computer science, or computer engineering, they teach you a lot of the cooler things you can do with programs. I suggest taking these courses through grade 10, as that's exactlly what I did. It makes creating your own programs and games easy. Those classes even helped me create my own version of "Asteroid". Your still pretty young, but you did a good job!