everyone has made mistake, right?
but if we know the mistake, and then we admit it, and finally we apologize at it, can't it be acceptable?
for me, maybe the most important thing from the mistake is when we learn how to accept other people critics, and move to be better based on that critics, because i believe when someone throw a critics on you, it means that he/she care for you :)
have a big heart
because everybody made a mistake, not only you :)