"Then my professor took the board, and said that if he finds a mistake, he will deduct points. Like an idiot, i said yes."

Idiot? No!

You may lose some points on this assignment, but if your professor shows you your mistake and you learn from it then you have made progress!

We can't see your schematic, nor your board, so we won't be able to show you any mistakes therein!
So, swallow your pride and learn from the Professor.

Do you know how many attempts Edison had before he finally got his electric light bulb right? I can't remember, but it was a lot!!
He didn't count these as failures, but steps towards success.