Down mood

My mood so down now
after my maths teacher discussed the answer of the exam,
my mood starting down.
You know why?
I have to be deducted so many marks due to my careless.
And I didn't show out my calculating, that's why.
Because of these mistakes and careless,
I have to lost so many mark.
I can't accepted it.
I thought that I can get high marks in this exam.
But then,
the result disappointed me.
Really really hurt.
I know how to do all the question,
but I was so careless,
losing so many mark.
Poor Shiaan.