If your partner is not aware or informed about female ejaculation that should be the first step. You should discuss it with her. Tell her how sexy you think it is, or how much it turns you on. Let her know that you want to pleasure her, if she doesn’t squirt that’s great too. Your main objective is to share a sexual experience and provide her with pleasure.

Be prepared, have a towel or two on the bed.

Ensure your hands are clean and that your fingernails are trimmed.

Have some lubrication on hand just in case. Female Ejaculation is usually the consistency of water and is not lubricating. If she is having squirting orgasms, especially if there is a great volume it may wash her natural lubrication away.

As you have read throughout this site fear of urination is a major hindrance to women achieving female ejaculation. Have her go to the bathroom first. Ensure her that it won’t be pee but that even if it were it wouldn’t be a problem. Whatever you need to do to make her comfortable. When she gets the urge let her know that it is the first sign that she is about to ejaculate. 

You should already know what turns her on, give lots of foreplay. Don’t rush, it may take some time. Focus on pleasing her.

After she has been aroused by your mouth or fingers implement this technique.

Technique:

Start slow. Use typical foreplay. You may want to start with her on her back. Stimulate the clitoris. This can be done with a moist finger, or with your tongue. Performing cunnilingus while rubbing her breasts with your hands can be quite stimulating for her. At any rate, continue clitoral stimulation until she is lubricated. At this point slide two fingers into her vagina. Allow them to move along the front wall of the vagina. You should encounter an area about 2 inches in, which should be somewhat enlarged. This is the G spot. It lies directly along the urethra, and is located almost directly behind the clitoris. Slowly stroke this area. It should start becoming more enlarged.

Ejaculation is almost always triggered by stimulating the G spot. Clitoral stimulation can often assist in helping her reach an ejaculation, and also can make it more intense. But stimulating the G spot is usually necessary at least initially. Once she starts ejaculating easily, she may find that clitoral stimulation alone is sufficient.

Stroking can be done a number of ways. The two fingers can rub the area as a unit, or they can take opposite strides, similar to walking. A third method involved sliding the two finders out a fraction of an inch, and pushing them back in, similar to the in- out motion of intercourse, but with smaller strokes. Initially pace the stimulation somewhat slow. Alternate with clitoral stimulation either with the thumb, other hand, or mouth/tongue. Also try simultaneous stimulation of the clitoris and G spot. Watch her reactions.

Simultaneous may be too intense for some but necessary for ejaculation for others. Take your cues from her. When she starts bearing down, and you feel the vagina contract, begin pumping rapidly. When she is in the middle of an orgasm, stimulate the clitoris at the same time, and pump the G spot gently, but very rapidly. Talk to her. Say, "your getting it, go for it, don't worry, relax and let it come" or other similar words. She may need reassurance that if she drenches you, you will not be upset. Tell her how erotic you find it for her to ejaculate. Make her comfortable with both you, and the idea of ejaculation.

This actually is not the best position. If she does not succeed after a short time, have her roll over on her stomach, and get up on her knees. You will find stimulating the G spot much easier in this position, and she will most likely respond much better. With the two fingers turned down, slide your two fingers back into her vagina. Find the G spot and continue stimulating the G spot. You may use the other hand to stimulate the clitoris. If after a couple of orgasms, using rapid pumping on the G spot during orgasm, she still has not ejaculated, then turn the hand around, putting the thumb into the vagina.

The thumb will likely not reach the G spot, but don't worry, it should come up to meet the thumb during orgasm. Take the two fingers and lay them down on the clit. Allow the entire curve between the thumb and forefinger to lie along her from the vagina to her clitoris, and begin pumping with the thumb, and rubbing the clit at the same time. When she starts an orgasm, start pumping the entire hand rapidly. At this point she will most likely ejaculate. The trick is to massage the area where the urethra comes out, while stimulating the clitoris and G spot. This will help to override the feeling she is about to pee, and allow her to let it pass.

Be aware that the female is not only capable of multiple orgasms, but also multiple ejaculations. It is not unusual for her to have from 3 to 5 ejaculations before depleting her supply of cum. Once she has ejaculated one or more times, you can continue with intercourse. Entering from behind will stimulate the G-spot more easily than missionary style, and often additional ejaculations will occur during intercourse. Even if they don't, she will be highly excited, and very sensitive. The final result will most likely be the most intense and pleasurable sex she has ever had.

I highly recommend "The G Spot" for further reading.