I would suggest any type of communication or longevity spells. But I immediately thought of the Pagan wedding blessing that spells8 has on their site. I had read over and saved it when I was planning to do a renewal of vows handfasting ceremony for my husband and I before we decided to separate instead I’m sure this would be a wonderful thing to incorporate into any workings related to your wedding
Editing to add that @MeganB came up with a beautiful oil to highlight your beautiful qualities that you have trouble seeing which might be worth making and dabbing on a smidge on your wedding day.
Beauty Magick