Jayden: Don't yell to teammate.
Correct: A good leader doesn't yell at his teammates.

Jayden: Ask their opinion first.
Correct: The sentence is grammatically correct but you may also say: A good leader asks his teammates' opinion first.

Jayden: Make a rule. How to make project.
Correct: Set rules. Talk about how the team will work on the project.

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Thank you very much for doing the homework, Jayden! You were able to express your ideas and I appreciate that you tried to construct sentences. Take note of the corrections I gave you and keep practicing! Thank you and good night!

~Teacher Gayl