Once more, make sure your hand is well oiled, especially the palm.
Take hold of the penis at the base.
If the penis is uncut, take your hand and pull down the foreskin, until the hand is at the base.
Keep the head of the penis exposed.
With your other hand, palm down, begin to massage just the head of the penis.
Change direction on occasion.
Do not apply a great deal of pressure, let the palm of your hand glide all over the head itself.