Hi Z11,
the fact that you are asking and thinking about this tells me that you can't be doing it wrong

.
ronnie has answered while I write this, and he's essentially right, yet I still wanna give my exhaustive reply:
The (subjective) answer depends very much on you and your relationship to the performer in question.
> When you take someone private on his usual cpm rate (i.e. no offer, deal etc.), personally, I would just relax and enjoy the show.
> Did you make an offer with a reduced cpm or are using a deal that offers you free minutes after so and so much paid minutes? I believe it would be great to tip the model during the show to further motivate him. However, even with deals and offers some can be very lucrative for the performer, who knows the total amount of credits he will earn rather well, so again, relax and enjoy if you made a generous offer.
Other show types might include:
> For group shows single pledges can be very low, so tipping should be the common thing to do (but is not mandatory and most won't do it).
> In party chat the rule is to tip if you like what you see (and wanna see more). Most models will stop enticing their viewers when no or too few tips come in.
> Fan club shows, as an appreciation for performers to their (subscribed) fans are even more fun with the unexpected tip in between.
In any case: If you have special (fetish or out-of-scenario) requests you should tip the model for that. If you know the guy well you can ask him, wait for it to happen and tip then, BUT in most cases you should go first and prove you are not a beggar, which is a big problem on the site.
A general advice is to accompany a successful/satisfying private with the corresponding amount of boost points (that you earn in various ways, but primarily with credits spent). It does not cost you an extra credit, but immediately helps the model and shows that you liked the show with them just as much as an additional credit tip.
Welcome, great to have you around and
Happy Flirting!
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