Open Question: Unemployment appeal letter?

Okay so i am 20 years old, just recently got fired from chilis restaurant in january. I filed for unemployment, won, then just recently got a notice of determination...I am preparing to write my appeal letter, and was googling examples of letters but all the ones I found were very professional, and not good examples for my simple case. I would like to get some simple examples if anyone would mind sharing, or just advice on what needs to go into the letter, and how it should be formatted. Really appreciate any responses, Thankyou :)