Hi Shan075,
What the above have said is perfectly correct.
Some young, inexperienced punters may only go for younger girls, and some older blokes are always looking for 18 year olds, but for most punters, it is all about the total experience.
Your body needs to be at least reasonable - if you have ugly growths sprouting from your body, you probably wont be very successful, but skinny, medium and larger ladies are all very successful as long as you are honest and market yourself well.
For most punters (how do I know what 'most punters' want ? I have no idea ! But my gut feeling is
want a lady who has a bit of life experience and does not have a whole raft of 'rules' (no touching, no DFK, no .....), and makes him feel like he is really important.
Young girls who cant wait for the punter to finish and leave do not get return business.
After my divorce I met a WL who was in her mid 30s (she said), and who was only part time. She was not a raving beauty, but she was very relaxed, had a lovely smile and a ready laugh. She didn't just lie there and wait for me to get on with it, but took an active part in the booking. She also had a little trick of using her pelvic muscles to squeeze during the action which drove me (and her other regulars) crazy. She only had a few regulars as she stopped advertising when she had enough, and only advertised when some regulars dropped away.
I would still be seeing her, however she went back to Sydney to look after her old mother.
Its all to do with what you bring to the business.
Cheers.