If you are looking for help with a school admission appeal, please provide as much relevant information as you can at the outset. Such as
What are the school's admissions criteria?
Which category/priority group were you applying under?
Why were you refused a place (the letter from the LEA should tell you this)?
What is the school's Published Admissions Number?
Will this be an Infant Class Size appeal (the LEA letter should also tell you this)?
What (in your view) are your grounds for appeal?
The better you explain the situation, the better the MN admissions gurus can advise you.