Congrats to you and your sister @phoenix_dawn!! 
And here’s a blessing prayer by Deborah Blake from the book: Everyday Witch A to Z Spellbook
Bless this child (Pagan baby blessing prayer) 
"A gift from the universe for us to hold and treasure
But belonging only to himself and to the gods
Let him be surrounded by light and love
Let him be protected and safe
Let him be healthy and strong
Let him learn and grow and thrive
And follow the path that is his with joy
May those around him love and like him
May those around him encourage and support him
May those around him nurture and appreciate him
May those around him help him to become his own best self
We welcome this child into our family
We welcome this child into our community
We welcome this child into our world
And give thanks for the gift of this new life "