Important elements of an appeal letter include a purpose statement, an acknowledgement of the circumstances that affected your studies, and your means of addressing those circumstances to attain a better performance in the future. Throughout your letter, be honest about the mistakes you made while promising to improve.
If the point of the appeal is for purposes outside of academic missteps, the same format applies. For example, if you are appealing to move an exam time, you still need a clear purpose statement at the outset of your letter, the circumstances that require an examination change, and a proposed solution to the problem.
While the appearance of the letter is vital, the tone and content of the letter are also crucial for its approval.
Include the facts. Acknowledge the mistakes or circumstances that took place without beating around the bush. Include any documentation necessary to substantiate your claims. For example, if you were sick, include a doctor's note.
Include specific details. For example, if you missed an exam because of a family obligation, state exactly what the obligation was. Additionally, be careful to avoid errors. It is best to type the letter and ensure that no grammatical errors exist. The more professional and thoughtful your letter appears, the better.