Need help with Ceremony structure!

I’d say you can do whatever you like. There’s nothing you’re really supposed to do except get married and be good hosts. You can have the short sermon before you guys come out. And have soft music playing while people wait for your arrival. You can read your own vows first then have the traditional ones after. That’s what we’re doing.

Last wedding I officiated had soft low music playing while they waited. Then switched to "Here comes the bride" when she came down the isle. I read a few lines of how we were gathered to celebrate the couple and the importance of love and a marriage bond. Then read from Corinthian's, they read their own vows followed by the classic I do vows then I read from John followed by announcing them as husband and wife. With another song playing as they walked hand in hand back down the isle.
Not saying that is what you have to do. It was just an example of the last one I did.

Here’s what we did:
Moms and wedding party processional with song
Bridal processional with songGiving away Welcome and moment of silenceMarriage speech Prayer Reading Declaration of intent Vows Rings Unity candle with music Traditional Irish blessing Pronouncement Presentation of mr and mrs Recessional with music

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I would ask the officiant for a standard template they uses and go from there