My Niece

I have a good sister who was made has had a baby. The baby is my niece that I love her very much. She have has big and string bright eyes and her hair ,too hard is strong, black and roll shiny.

我有一个好姐姐，她生了一个宝宝。这个宝宝是我的外甥女，我非常喜欢她。她有一双明亮的大眼睛，她的头发很硬，而且又黑又亮。

Good job! Thank you for writing in Chinese as well, it was a great help.

Note: When translating 亮, we usually say "bright eyes" or "shiny hair".