Before I go: help with planning your funeral
Christians frequently consider death but don't always make practical plans for their own funerals or what happens to their estate. In recent times we have run programmes for members of our community to encourage them to make plans. Some of that material can be found here.
It is a good thing to leave a written statement of your wishes. It will greatly help those who have to make the practical arrangements (be sure to tell them where to find it). Consider these matters:
Arranging a Funeral (Citizens Advice)
AgeUK Factsheet 27: Planning for a Funeral
(January 2015) Very comprehensive and accessible
THE BODY AND THE ENVIRONMENT
Traditional coffins and cremation have a 'cost' to the environment. If you are concerned about this, see here for alternatives
Gravetalk - a new Church of England initiative to help us talk about death, dying and funerals. Includes many resources and suggestions.