i think that i do a few things:
1. first, i would learn to practice quietly.
a dear friend of mine is incredably peaceful about her practice. her religion (buddhism) is different from her family (catholic, old school). while her parents are very sweet, loving and gentle people, they were very upset about her practicing buddhism.
she went to her teacher, and he spoke to all of us about how we should not practice if it is causing another suffering, but that if it causes us suffering to not practice, then we must learn to practice "quietly" so that no one notices.
he gave examples, and so this is what she did.
she went onto craig's list and found a beautiful, though small, wooden cabinet with a lock. inside there were shelves and drawers. she placed her buddha statue and altar materials on one shelf, and her books on another. in the drawers, she put things like her mala and other elements that were part of her practice.
she then locked the cabinet. every evening her family would pray before meals and then after the meal they would do the rosary. she would sit with them while they did this, honoring their religion. she would then excuse herself and go to her room. she would lock her door (which is customary in hr house when you want privacy), and she would open her cabinet.
her parents honestly believed that she had given up buddhism, even though she continued to come to sessin each week and she meditated every night after the rosary. she just never, ever mentioned buddhism or the sessin or meditation or any of it to her family. she knew that it caused them too much suffering, and strife between them.
another friend of mine applied this to her experience of christianity. she was chastized by some church goers for 'putting her light under a bushel basket'--but her 'brand' of christianity was not accepted by her family (husband and extended). and so she started practicing her faith in the same way as my friend. she got her cabinet, and she practiced in quiet, in that inner room that Jesus speaks of is how she saw it.
2. i would forgo any process that would inhibit my relationship with my children. that is, your children need to know you and therefore also know your faith because it is a part of you. but you don't have to teach it as an absolute--and i don't think that is your intent by your description. you just want to share what you believe.
i think that it is important for children to know this aspect of people. faith is a beautiful thing.
my mother and i are of two different religions. i'm buddhist, my mother is catholic. she honestly believes that "anyone who turns their back on christ goes to hell." it's very strange, to me, that she believes this. it is incongruous with my vision of who she is as a person, who i have always known or thought her to be. nevertheless, she has stated this to me more than one time.
when hawk was born, she was concerned about us raising him non-christian. she was also concerned that we would not allow them to 'share their faith' with him. to me, this would be sad because to know his grandmother is to also know her faith.
it doesn't mean that he needs to go to catholic school and church and all of that. he just needs to know what she thinks and believes.
but i did put a few parameters on it. i told her that i do not mind if she shares her faith--the basic tenants, what she likes about it, etc. and, when he's grown, if she wants to pop the 'hell' thing on him (i figure when he's 20 or so would be fine, and i told her this), then that would be ok too.
what we will not tolerate is the idea that he should be christian or that we should be christian--and that we are wrong or bad for not being this thing.
(btw, i am upset at my mother for bringing up her stupid "stuff" at his baby blessing. she spoke up as "I just have to say that WE are followers of CHRIST and i want that mentioned at his blessing" when it came her time to speak. whey people have to bring their crap up. . .that was her broadcasting "i'm upset that you're not christian" not really offering anything to the blessing itself. . . but that's an aside.
So, i guess what i'm saying is that i think you absolutely should share your faith with your children, but in a casual way as if you would share what you did with your day or how you feel about the cosmos, rather than in a systematic way, particularly if that systematic way upsets your husband.
now, if your child wants a more systematic way, then by all means, follow the child's lead.
3. if your husband cannot deal with 1 and 2, THEN i would confront him about his stuff.
as i have said to those stubborn family members (like my mother)--you don't have to like it, you don't have to approve. we're not asking for your premission, this is what we are doing.
they usually back off. you are a grown woman and a mother to your children. you can decide for yoruself what to believe in and how to practice your spirituality. you don't require his permission or approval to do it, nor do you require these things to share who you are (as a person of faith) with your own children.
but you do require mutual respect, and if he'll address and work through his fears with you, i'm sure you'll come to a perfect solution.