Praying is simply talking to God. He knows you. What matters is the attitude of your heart, your honesty. Pray a prayer like this to accept Jesus as your Savior:

“Jesus Christ,
I am sorry for the things I have done wrong in my life.  Thank you for dying on the Cross for me, set me free from all my sins and forgive me today.  Please come into my life and fill me with your Holy Spirit.  Be with me forever.
Thank you Jesus!”