My aunt is a ballerina and has long hair.
My uncle is a doctor and has short hair.
My cousin is 5 years old and cute.

==========================

1.
Anna: my aunt is long hair and ballerina
Correct: My aunt is a ballerina and has long hair.
Explanation:
*Begin your sentence with a capital letter and end with a period.
*Identify first what your aunt does, then describer her physical appearance.

2.
Anna: my uncle is short hair and doctor
Correct: My uncle is a doctor and has short hair.
Explanation:
*Begin your sentence with a capital letter and end with a period.
*Identify first what your uncle does, then describer his physical appearance.

3.
Anna: m y couisn is cute and 5yeard old
Correct: My cousin is 5 years old and cute.
Explanation:
*Begin your sentence with a capital letter and end with a period.
*Identify first the age of your cousin, then describer his/her physical appearance.
*Be conscious of the spelling of the word cousin and years.

==========================

Hello, Anna! Thank you for submitting your homework. Please read the following corrections and explanations carefully. If you have questions and clarifications, you can ask me in our class. Thank you!