You will be fine, Hasell has hit the nail on the head, your instructor will know a lot more about your capabilities than you do, just dont do anything stupid like landing with a 20 kt tailwind
I remember my first solo, did my checks, did them again and again and again, then talked to myself all the way round.
I was out in the states hour building not so long ago, and I heard a quivering voice come over the radio to quest clearance for departure, the controller knowing full well it was this guys first solo came over the radio and said,
'N942AC just a walk in the park, wind 060 at 5 runway 05, clear for take off make right traffic'
Typical american ATC but sounded very cool, or I thought so anyway
Good luck mate.