As I said upthread, I don't believe in this at all.
I have challenged people who do. The passage that says this talks first about submitting to one another, and later about the husband loving his wife above all.
So my challenge is, given that we live in the 21st century, and view love through 21st century eyes, if my dh loves me, then he will think that my opinion is valid. Therefore all decisions in our house should be taken after a discussion where both viewpoints are equally heard. If I have not heard him, then I haven't respected his view, and if he hasn't heard me then he hasn't loved me enough to hear me (to use the Biblical terminology)
Once we have discussed it, hopefully we will reach a mutually agreeable solution. If we don't, and dh forged ahead with what he wants, then he isn't loving me is he? If I forge ahead with what I want, then I am not respecting him.
So (and I just point out that I am arguing this using the vocab of those who believe it) so, in this day and age, the idea of headship is irrelevant and outdated, having been taken over by the more important idea of mutual love and respect.
I cannot think of one decision where headship would be relevant, except in an abusive relationship. If the paradigm doesn't work any more, why use it?