I felt exactly the same, I got so worked up on the way there I was in tears!!
My mum said to my the surgeon doesn’t see your breads like you do, he just simply see’s them as a frame work o a canvas kind thing like a painter would! Try and think of it that way! Like you said he deals with breasts day in day out! Try not to worry, this is he person that will make them perfect!:D xxxx