Your Job as a Performer
There's more to being a performer than just being sexy.

Obviously your job as a porn performer is to be sexy, and if you're a hardcore porn performer, to have hot sex on cue. However there are other things that come along with the job.

To be a successful porn performer you need to be a professional porn performer. That means the following:

Be well rested before your shoots. Don't stay out partying the night before your porn shoots. No amount of makeup can take the tired look out of your eyes. Also generally you need ENERGY to put forth a good performance. 

Showing up drunk and/or high is not a good idea either.

Be on time for your shoots. Everyone appreciates a person who's ON TIME. Women who are consistently late are seen as flakey. Reliable on time performers are repeatedly booked and in demand.
Be prepared when you arrive on set. Have your "Porn Shoot Toolbox" together!
Keep your appearance up throughout your porn career. Take care of yourself. Exercise and eat right. Don't fall into the world of drugs. Many women start out looking great but by the middle of their porn career look like hell. Don't become one of those women.
Be willing to take direction. Remember that as a porn performer you are an ACTRESS. The scene is rarely just you being you, so be willing to take direction, however only do what you are COMFORTABLE DOING.
Pay your agent their commissions in a timely manner. Just like how you don't like waiting for your money, neither does your agent if you have one. Pay them their commissions as soon as you receive your paychecks. They will appreciate it.

Beware of agents or agencies that attempt to collect their commissions from you BEFORE you receive your paycheck.

Answer your fan mail YOURSELF. That's right! There would be no porn industry if it wasn't for the porn fans, so show them some love, and answer your emails and Myspace messages yourself.

If you hire someone to build your website, make sure they set up your email to where it is forwarded to you.

Show up to the events you're scheduled to attend. Part of being a pornstar in my opinion is getting out to meet your fans. If you're scheduled to be at a convention or event - SHOW UP!
Have a good attitude. No one likes a DIVA and unfortunately in porn, many women develop an attitude very quickly that their "shit doesn't stink". I don't care how famous you are or think you are, treat others with consideration and respect. Be confident, not bitchy (same goes for you MALE PERFORMERS).

Sometimes in scenes you will be paired with people that YOU WOULD NEVER BE ATTRACTED TO IN YOUR PERSONAL LIFE. Even if that's the case, still put forth your best effort - that's why even though it's porn, it's still ACTING.

As I've stated in other sections of this site, the porn industry is a surprisingly small world and if word gets out that you have a bad attitude, people will think twice about booking you no matter how hot and sexy you are.