Can anyone give me some tips

Vagina/blended/G-spot orgasms are different from clitoral orgasms. Many more women succeed in clitoral orgasms more. It doesn't mean anything is wrong with you, just that everyone's different.

Try and have a clitoral orgasm first for warm up. Or you can use a small clitoral toy while he is inside you. Always relax and not over think things. Orgasms come to those with more relaxed minds.

You could also get an orgasm from him going down on your beforehand. There's no pressure, just enjoy! Have fun!

I would communicate with him about the things that you like and what feels good. Try using some toys- perhaps a small little vibe that you can use on your clit.

absolute openness and trust... Honestly. There is no greater male or female orgasm than that attained by being open, honest and giving yourself to your partner fully during sex. My current partner and I enjoy the most mind blowing, toe curling orgasms because we loose ourselves in one another so throughly that sex becomes something of a pure emotional high. You can try positions and different stimulations, but in my experience nothing compares to what you can do when you turn your brain off and use only your emotions during intercourse.

Great tips so far! The other thing I'd suggest (if you haven't already done it) is to explore what you like by yourself. Try all different things, because the more you know about what you like, the better you'll be able to communicate that to your husband.

Spanking!

Have you tried attending a course in tantric massage. I did one and it boosted my sex life to new levels. I would recommend it to everyone.