What's something special I can do with my best friend's yearbook PLEASE!?

So earlier today one of my friends gave me her yearbook to sign. I had no idea what to write so she said take it home and give it to me tomorrow. Well I kinda wrote a little in it (in highlighter -_-) and its dumb :/ It goes "Hey (name), I'm sooo glad we grew into closer friends this year!" and I stopped there. Ugh :( I want it to be something special but I don't know what to do! I was thinking maybe glue some paper on there so its like a holder in the book (like I would glue all of the sides of the paper except for the top) and then put a special note in it (this would cover my mistake too). But I don't know is that weird? What do you think PLEASE!