I think it takes practice... but it is possible if your turned on enough and if you relax...
I also am unlikely to come with just my clitoris now after years of variation and infact too much clitoral stimulation can hurt and become unpleasant.
Personally, I have found some men are well tbh rubbish when it comes to directing and imagination and maybe you need to be a little more inventive to spice up things. Also size, shape and movement does all have an effect and this is were the practice may be needed, we are all different as well. Some men I have been with just didn't have the equipment and were to inexperienced to think of foreplay or toys.
Great place to start is with foreplay. Get him to finger you at the same time as concentrating on your clitoris. Or use a small toy to help find your way. Also there is alot to be said for pelvic floor muscles and you should try and use them to your advantage, they can really intensify the feeling.
Relax and be reasonably selfish. Try not to want it too much and just think about how great it feels and let yourself go.