Constructive criticism welcome!
Being some what of a "Hand Job Connoisseur" Myself I find that the Session is usually over when You shoot Your Load. Thats not "Always" the case, but as a general rule it is.
May I suggest making the Massage last a little longer, I. E. Use a little self control and don't roll over on to your back until you just can't stand it any longer and need "Releaf".
One must remember that thease Girls do this for a living and are "Experts" at this and have a whole hour, (If You Chose) to turn you on so to speak. Durning that hour more than likely she will have grazed your "Cock & Balls" with her hand. Sometimes she may actually reach down and stroke your cock for at bit then resume the Massage. A really good Massuse will even play with your "Asshole" a bit. She is gaining control over the situation and she knows exactly what she's doing and when your Ready.
Her Job for that hour is to get you ready for the "Happy Finish" which of course you both know is why you called her or came in their in the first place.
A good Hand Job is an "Art Form" and "No You Can't Do It Yourself" it takes "Skill & Experience". Moreover its about 95% of going "Bare Back", yet its "Safe Sex", Something to Think About.
Exon