Andrew: I need to be easygoing when I study homework
Correct: I need to be easygoing when I make homeworks.

Andrew:  However in crowd, I can't concentrate with all that noise going on.
Correct: However, I can't concentrate if there are people around me becaue of the noise.

Andrew: So, I have to stay in calm place because of concentration.
Correct: So, I have to stay in a calm place.
Explanation: The indefinite article "a" refers to a particular or certain one of a class or group thing: a man; a chemical; a house.

Andrew: My mom is artistic about flower art
Correct: My mom is artistic when it comes to flower art.

Andrew: So, in our house, many pictures are hanged
on wall.
Correct: So, in our house, many pictures are on the wall.
Explanation: The definite article "the" is used especially before a noun.

Andrew: I proud of my mom's ability
Correct: I am proud of my mom's ability.

Andrew: When I had job interview, I was nervous.
Correct: When I had job my interview, I was nervous.
Explanation: The pronoun "my" is used a form of the possessive case of I used as an attributive adjective):
"My soup is cold."

Andrew:  because jon interview was first introduction to life. But I did my best.
Correct: It's  because I had to speak about my life. But I did my best.
Explanation: The pronoun "it" is used to represent a concept or  idea understood or previously stated.

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Hello, Andrew! Thank your for submitting your homework! A job well done! See you later in class.

-Teacher Isabel