Some girls climax easily. But many have to experiment a lot before they discover how to orgasm. You may get easily excited but have difficulty getting round the top of the hill. Some things to try:
Take your time. Some girls climax after a few minutes, but for others it can take more than 20 minutes. Don’t rush yourself.
When you are very excited don’t change the rhythm or kind of stimulation. When you change the way you caress yourself your excitement drops a little and you descend a few steps on the ladder.
When you are ready to climax you have to concentrate. One way to do this is by fantasizing or you can focus on the feeling between your legs.
Fake an orgasm when you masturbate. If you act as if you are coming, it’s easier to let go, making it easier to really climax. Your play becomes reality.
Keep stimulating yourself when your orgasm starts. This makes the experience more intense.
For girls who have difficulty climaxing a vibrator can be of great help. Try it to see if it helps you.