How do I change this account on my iPad from my husbands account to mine with my different email?

Your question is unclear in what, precisely, you are attempting to achieve.

Are you attempting to add/remove/change an email account - or instead change the user of the iPad, therefore requiring sign-in with a different AppleID? These are very different problems.

Adding a new email account is straightforward:

Add an email account to your iPhone, iPad, or iPod touch - Apple Support

Removing an email account is similarly easy:

Settings > Mail > Accounts > [Choose email account from list] > Delete Account

If the iPad is to be used by a different user, with a different AppleID, the most effective way to properly prepare the iPad for a new user is to follow this process:

What to do before you sell, give away, or trade in your iPhone, iPad, or iPod touch - Apple Support

Everything will be erased - and you can set-up the iPad again, as new, for the new user.

If you don't want to restore the iPad to factory settings, you'll need to sign out from the Apple ID in 4 different places and sign in with yours. Do note that any installed apps will remain tied to your husband's Apple ID and require it to update.

Settings->Account(top of settings)->Scroll all the way down to "Sign Out".

Settings->Account->Media & Purchases->Sign Out

Settings->Messages->Send & Receive->Apple ID->Sign Out

Settings->FaceTime->You can be Reached by FaceTime At->Apple ID->Sign Out.

Otherwise, the best thing to do is to restore it and set it up as new: link-> What to do before you sell, give away, or trade in your iPhone, iPad, or iPod touch - Apple Support