I doubt there is a man alive who does not thoroughly enjoy getting a great blow job! With 30+ years of cock sucking experience behind me, I would love to share some of my sexy secrets with you, on the art of giving head.
Like most sex acts, there are an infinite number of positions you can assume in performing them. With this particular technique, I recommend your man be standing in front of you, facing you, while you kneel or squat on the edge of a low to medium height bed or sofa. If he begins to feel a little weak in the knees as the act progresses, he can simply lean forward against the bed for support.
You should take his hard cumpole very gently into both your hands, placing all ten fingers on the shaft, not touching the head or tip yet. Slowly begin rubbing his skin softly, by moving your hands back and forth in opposite directions, as you would twirl a stick in your hands to start a campfire. Remember, start gently -- no hard squeezing yet!
As you continue these finger-stroking movements, open your mouth wide in order to fully cover the cock's head without touching any part of it. When the entire head is inside your mouth, slowly close your lips over it as you start sucking softly. Utilize every area of your mouth -- tongue, cheeks, teeth, and roof -- to make direct cock contact! Continue this touching/sucking technique for about 10 minutes.