Before you have sex, whisper sweet nothings in her ear. Make a comment on how she looks, her hair, her figure, cuddle her, massage her, tickle her, etc. Massage her nipples and breasts and maybe kiss her neck. Put on some romantic music, sing to her and have a candlelit dinner. There is a lot that you can do to enhance this.
Romance is very important to a woman.
Get her turned on and get those hormones flowing. Prepare for the romance and take time, don't rush it. You can have a better orgasm when you are familiar with your own body. You then know what makes you tick and what makes you feel good. You can guide your partner to those spots when you are making love.