big thing, DONT go into it TRYING to impress her or worrying she wont like you. Youve done that. You kissed and made first contact and she wants to see you again. Diplomatic relations have been established.
As scary as this may sound to you, BE YOURSELF. let her see who you are as a person. And if your feeling a little nervous, be honest with her about it. Dont elaborate too much. But just tell her your a little shy. Chances are she feels the same, Even if shes had BFs before, your still someone new and the chemistry is still forming.
Open the door, pull out the chair, be a gentleman. Youve got nothing to worry about

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Let us know how friday goes!!
Also, on a diff note, discreetly try to find out if she has a favourite flower or somthing. Make a note of it. After a month or two, randomly suprise her with it. Brownie points my friend

. The little things matter!