Courage is turning in the project that isn’t perfect because the deadline is real.

Perfectionism dresses up as high standards and often works as avoidance, because an unfinished thing cannot be judged. Handing it in means letting people see work you know has flaws in it, which is a small act of exposure every time. Deadlines do you a favour by ending the argument. Finished and imperfect is a thing that exists, and perfect and late usually is not.

Set your own cut off a day before the real one and submit what you have then. Spend the final hour on the parts that affect the grade rather than on polish nobody will notice. Write down what you would fix with more time.