***exam*** ya wid A level but chek after results wid me i will get gud results........... A*
It is great to be confident but it is not great to be OVER confident, since it might make you study less thinking that you already know everything and you will score A*'s.
I was over confident of getting an A* in Business IGCSE because I was a top grader in my school. I used to get the highest grades in mocks and exams amongst ALL the boys and girls. My forecast was an A* but before the exam night I became totally confident that I did not revise much for the paper and oh well, ended up with not an A* but with a B. Shocked and disappointed, I couldn't even face my teacher. I got in others A's and A* while in Business B.
As I said being confident is awesome but not VERY confident. =] Best of luck.