Sarah-Annes music

i have always loved singing ever since i first sang and people were like oh we wanna here u sing and heres proof that i can. but some people say that i cant and i am tone deaf! ugh! big headed people are just jealous of me!
i am goin to audition for Britain's got talent and the X factor this year hope i get thru lol!
any comments would be help full!
thank you xx