Tell her what she means to you- Now the best possible tip to really give her a perfect orgasm would be emotional stimulation more than physical stimulation. You see females are most responsive and orgasm faster when they are emotionally stimulated. Therefore learn to tell her what she means to you and how much you love and respect her. Tell her that you really want to make her happy and you would do all possible things to give her that ultimate happiness. This would really get her emotionally involved and she is more likely to orgasm now than ever before.
Up and down strokes- Never get into intercourse too early. Do you know that it’s always recommended to make her orgasm doing oral before you have intercourse? Now to really make her have a hard screaming orgasm insert your middle two fingers into her vagina and stimulate the G-spot. Now if you don’t know where this spot is the best possible way to locate it is to keep one of your hands on her public bone and do the up and down motion with your fingers instead of the in and out motion in her vagina. This way you are automatically stimulating her G-spot and you would instantly witness her achieve multiple orgasms instantly.