In our group, we like to offer the opportunity to all members, the chance to write and host a High Day ritual. Many times, when a member agrees to do so for the first time, it may be overwhelming. It need not be so, if taken one step at a time…
Decide what the hearth culture will be, and the patrons of occasion. (Our group is Pan Indo European, so the first part of this step may not apply if your group has a specific hearth culture.) Try to choose hearth culture and patrons of the occasion that historically had something to do with the holiday or seasonal theme. Samhain, Imbolc, Beltane, and Lughnasadh are Celtic in origin, though cultures close to them celebrated related holidays.
Jot down an outline. For an ADF High Day rite, it will need to follow the Core Order of Ritual, including the “musts” listed therein. Your group may have an outline they use often. Look at scripts from past rituals to get an idea.
Look over the abundant collection of liturgy in the rituals section of the ADF website. Pick your favorite wordage and adapt it, or write your own. Read what you’ve written aloud to see if it seems like something you’d say; notice if the words flow naturally from your lips. Re-write sections that don’t seem to have that flow. Be sure to include opportunities for group participation; times for individual prayers, invocations, and offerings. Also include a tradition to commemorate the holiday (for example, sharing fruit/bread for a harvest ritual, or blessing seeds for a Spring ritual).
Strategically place songs or chants at logical points in the ritual. You may want to pick some songs that your group has done before and you know they like. Notify the group of which songs will be in the ritual, so that they may listen to and practice them before the ritual.
When you are satisfied with the ritual you have written, share the script with the group using dropbox. It’s free, and I hear it works well with the screen readers used by sight-impaired participants.
Enlist help! Your load will be lighter with the help of a couple other officiants, plus people taking on smaller roles. You may want to use a system like the Hallow Keepers. Invite the group to help in decorating the ritual altar and setting up the site. Relax and let the Kindreds inspire you. You are among your grove, your friends.