Is this the girl with the lavender pearl bracelet?
I'm glad it has worked out.
She has said yes because she likes you, so just go on being you.
One thing that is usually recommended is to listen to her and be genuinely interested in what she has to say.
And be clean.
I know that many boys are, but you would be surprised at how many think that it's ok to smell, and to have dirty teeth, ears, fingernails, etc, and not to change socks and underwear daily!
Just enjoy yourselves!
"The secret of success is constancy to purpose" - Benjamin Disraeli.