Hot and cold is a good idea. meaning have some ice cubes and warm water nearby, alternate you hand in hot and cold water while touching yourself. Also about 5 % of woman can orgasm by laying on there stomach with a pillow your duvet cover between there legs and rocking back and forth.
I would also look on the internet at what other woman do, and maybe get a few tips from that, a while back I was fascinated by how woman masturbate, so I found a website in Australia called
link There a number of free videos on this site that will give you an idea.
Another thing that I have heard helps is music, so put the headphones on and get your groooove on.