Goin insane !!!!

Oh yes, i am goin insane, i've been trying to change my header with a graphics that i made and used in my bravejournal header. I need it badly here.. I've researched the net on how to change the codes, i almost got it but the header seems to be cut on top..
I'm getting impatient here huh.. at bravejournal it is soooo easy to put the header in 2 ways .. in here i am at lost hahaha.. Hopefully an angel can give me the right code and right directions on how to do it.. Right now i am goin to try and try and try and try and try.. lol..