Hello I´m writing because I want to sent a letter to Harrison Ford, I know how dress the envelope but now I´m unsure what content should go in the actual letter. Should I out a picture for the autogram in? or will I get one? and can I make a wish like, if could get the picture from Han Solo from the...

Hello I´m from Germany and want to address Harrison ford. I found some infos but I´m not sure on how to label the envelope. If someone can help me I would be very happy.