1. Will you be printing them on small cards or in a keepsake booklet to read from?
2. Are you comfortable with reaching deep inside your heart to compose these words and read them to each other with family and guests present?
3. Do you want unique, modern, spiritual, romantic, etc. vows?
Answering the above may give you a better insight about writing your own vows. Otherwise, your Officiant will prepare traditional type vows for you to review and consider.
You may have the option to change them to your own wishes and this process may be easier for you than creating the vows from the beginning.
Church ceremonies within specific religious denominations may be standard within the doctrine but you may also have a few choices. Your minister, priest, reverand or rabbi will guide you on these issues.
Creating your own vows can be a beautiful addition to one of the most special days in your life. Research all options, ask questions and always follow the choice you make with respect and courtesy.
Happy Wedding Day,