For my brother- opinions?

Well I have been asking my friends and children of my family to be parts of my bridal party. Since my father will either be too ill or no longer with us to attend my wedding, I have decided to ask my big brother to help my mother give me away and stand under the chuppah as the male in my family.

I chose this card and personalized it with clear labels. Of course I will write a message inside to ask him. I hope that by using the labels and the written message inside, that the front of the card won't look too lovey-dovey rather more like big brother/little sister. What do you ladies think.