Pick out the best birthday card and write a quote that he can relate to.

What to say to your nephew on his 18th birthday. I hope your birthday is magical and sprinkled with fun. Today lets not say 18 years old and instead say 18 years young. Dear nephew may you spend your birthday doing the things you love to do.

Happy Birthday to my beloved nephew. Being your aunt has been one of the great pleasures of my life. I can sense that you are a beautiful soul and wish you the best- namaste.

Most of the teenagers wait for this day to celebrate their happy 18th birthday with lots of fun and enjoyments. Your aunty cant be there but I love you so much. Happy 18th Birthday Wishes.

May this new phase of your life come with the accomplishment of all your dreams. You may be an adult in the eyes of the law but in my eyes you are still the same precious godson I first met in the maternity ward. If Im not mistaken.

Youre the best nephew in the world and you keep making me really proud to be your uncle. Happy 18th birthday to my cute nephew. I wish you many congratulations nephew.

Im glad to be here with you on this big day. Glad to be have the kind you lately how happiness that you parents chide you simply say Back off or guy. Top it off with a sweet tweet or a cute post on Facebook.