Age 11 and not able to go to Hogwarts

Okay, Ms. Amanda....it's time to start putting together that wonderful letter for my soon to be 11 yr old. I figure it will take till June to figure out what to say but still keep her motivated to do Hogwarts. Got any words of wisdom for this letter. I hope to be able to go to Wizarding World of Harry Potter but it won't be till Labor Day weekend so......Oh how to help her dreams stay alive!