You unfold the piece of paper and read:
Dear Mr Fishbringer,
Thank you for your correspondence. Unfortunately, you do not meet the following requirements to be considered for entry into the Wizard's Guild:
Insufficient Power
Insufficient Magical Schooling
If you are able to address these issues, you may apply again in one year's time.
Yours sincerely,
Morris White (Secretary to Archwizard Wintergrist)