I think it is important to think about how you would like your own funeral to be. If you wrote things down and put it into a sealed envelope, then at least your loved ones would be helped along the way when deciding what to do. You could choose the song that meant the most o you in your life. You could chose a poem that has always meant so musch to you. You can tell them what church or place you would like the service to take place. Even having a list of all the friends you know who should be told would help your family to organise the funeral when yu are no longer there to help them.