I can of feel shame to ask this; but is a sin to demand pleasure to your husband?

No it is obviously not a 'sin' to want to have sex with your husband -- that is a given in any marriage.

Perhaps your husband does not like you DEMANDING it from him... be sensitive to him and either ask him gently, and be prepared to accept 'no' occasionally if he is not in the mood, or else do not ask him outright, but catch him in a good moment and offer to give him oral sex or do something physical to him that makes him respond sexually to you, so that you don't have to verbally ask him for sex.... or you could be even more subtle than that and wear some sexy underwear or negligee and let him catch a glimpse of you... before you get dressed... so that he is visually turned on and pursues you. Make him think he's after you, lol.

Is it a sin? No. Is it rude and a turn off? Yes. Try using a different approach. Counseling not neccessary.

Demand away

Of course it is not a sin.

In fact it is a sin if he is not doing it willingly.

What are you asking?

Do you mean pleasure OF your husband? Repost it in better English, please.