Oh okay, ha ha, the "A" on the cap stands for Alabama, it's University of Alabama. They are really really good at football. I saw that cap and thought you might study here in Alabama,too. It's Alabama, so there aren't really a lot of Asians here. Does your brother study here? Glad to see that cap on 01 though. Ha ha.
Your English is not bad. "Grammar" is uncountable, so we use Grammar "is." and That day I "lost"it.
I'm not really good at grammar either, but other than those two problems, I think nothing's wrong!