I need some help with this...
I have a friend named Teah and she told me to write "Teah is awesome" in Japanese. So I wrote this:
てあはすごいです
(I understand "Teah" is not a Japanese name, I replaced it with "Teaha".)
Would that be correct?

Question

I need some help with this...
I have a friend named Teah and she told me to write "Teah is awesome" in Japanese. So I wrote this:
てあは すごい です
(I understand "Teah" is not a Japanese name, I replaced it with "Teaha".)
Would that be correct?

Answer

Yes. But テアは すごい です is better. We use katakana for foreign/loan word. And you can also say/write テアは すごい（よ）. です is a honorific. You can omit it to your friends.