Lovely speech Michele - you're a loving sister and it shows! As all have said, you know best, and since you asked I will share...it would be so cute to hear a memory of a big sister of her little brother - and if it's funny to help you relax, I think he and the guests would love --

BUT not necessary -

Your speech is not basic.

Sometimes - in the moment, things come to mind - and feel free to veer off with what comes from the heart - believe me, your audience will just feed off the genuine love you have for him and wanting them to have a special day.

You rock Michele - you are going to do a fabulous job! Enjoy the wedding - wow, can't believe it's here already!