Denied unemployment, how do I appeal? - what worked for you?

I was told my separation was for misconduct, which is not what happened. I worked as a payroll clerk before this. My employer's version of events does not match mine, and I have emails that show it. If you have appealed before, what helped you prepare?

Thanks for writing this out. I went through something close to it last year, and it got easier once I kept a simple log of every call and form.

I printed my emails in order and wrote a one-page timeline. The hearing officer kept going back to it.