My cousin Cherine is from Europe she went to visit us last summer.
My cousin Cherine lives in Europe(better tell which country in Eurpoe). She paid us a visit last summer.
She's 11years old she's tall , she has got a round face , big eyes ans straight hair
Cherine is a tall girl with a round face and big eyes. She's got beautiful straight hair too. ... I added "beautiful" to spice up your sentence. Hope her hair is beautiful ....LOL
She is intellegent but she is very noisy we have little commun she loves football I hate it I'm mad about music she not intersted to much in as you can imagine we didn't have a very good time together we were really getting on each others i hope that she 'll change
This sentence is too long. Break it into shorter sentences to enhance its effect :)