If you choose to cuckold your husband, you will do so with a sexually superior man. There would be no point in any other approach.
Once you've been fucked by that sexually superior man, you will likely look at sex with your newly-cuckolded husband in a different light. It might take some trial and error to find the right bull, but eventually you'll discover that your husband is quite literally sexually inferior to your new lover.
Given his inferiority, it doesn't really make sense that your cuckold should have unfettered access to your pussy for his pleasure. In fact, I'd suggest that you demote him, sexually speaking. I suggest that you make him start from the bottom.
I'm not talking about your ass. I'm talking about your feet.
Your bull gets to enjoy your pussy and perhaps even your mouth. Your cuckold, on the other hand, has to earn the right to fuck your feet. He has to start all the way at the bottom and slowly work his way up. If he does a good job or you're feeling especially generous, your cuckold can be permitted to fuck your pussy, but not before he works his way up.
Start with Your Feet
Start with your feet. Make him worship them as you see fit. That could be foot massages. That could be sucking on your toes and licking your feet. If you're feeling dominant and naughty, let him lick your feet clean after you've been out all day. Let him lick up the sweat and whatever dirt has gathered there.
After he's earned the right to have an orgasm - and this denial could stretch on for days or weeks depending on your desires - you can give your husband the pleasure of lubing up your feet and fucking them for his pleasure.
While he does so, he'll almost certainly find it thrilling if you remind him of his status as a cuck. Remind that he's fucking your feet because he's not worthy of your pussy. Remind him that he was denied for a week because he's an inferior man. Remind him that he'll be cleaning his load off your feet once he cums because a cuckold always has to clean up his messes.
Move Up to Your Legs
When you feel your cuckold has earned it, let him move up. Now, when he's eager to cum and you're willing to grant him an orgasm, let him fuck your lovely calves. Let him slide his cock between them. Let him thrust wildly.
You can mix it up, too. Turn around and have him worship your asshole while he fucks your legs. Have him lick your pussy. Dress up in stockings or pantyhose and give him the pleasure of a textural shift. Make sure he cleans up his mess afterwards, of course, as it's always good to refocus your cuckold on your desires after he's had his orgasm.
When it times to move up once more, you can permit your cuckold to fuck your thighs. This is slightly more difficult from a logistical perspective, but it's easy enough if you lie in the bed and allow him to place his cock between your thighs and thrust downwards. I'd recommend making him wear a condom for this one as you don't want him cumming on the bed. Plus, it's easier to make him clean up his mess if it's all contained within a rubber.
Finally He Gets to Fuck You...But it Will be Quick
Finally he's worked his way up to your pussy. How long it's taken is entirely dependent on you, but feel free to take your time. After all, your cuckold almost certainly enjoys the humiliation that comes with being told that he's only worthy of fucking your feet or legs.
Also feel free to make him earn the right to fuck your pussy. Make him do chores. Make him worship your body via massage. Make him treat you to a fancy dinner or a shopping trip. Make him truly cherish your pussy by ensuring that he works hard to enjoy it.
For fun, deny him an orgasm for quite some time before he gets to fuck you. On the night you've agreed to let him in your pussy, tease him relentlessly. Keep him aroused for hours. Let him fuck your feet and your legs a little. Then, when you finally take him in your pussy it will be quick, which reinforces his status as a cuckold, given that there's no chance he'll be able to make you cum if he spills his load less than a minute after entering your pussy.
As always, make him clean up.
If you'd like, you can keep letting him head north. He can fuck your breasts and enjoy your mouth, though I'd recommend that he starts from the bottom once more and that next time you can skip over your pussy and reward him with your breasts or mouth before he once again has to start from the bottom.
For the cucks out there, I'm curious if you think you'd have the patience to work your way up from the bottom and if you'd enjoy the humiliation of only being permitted to fuck your wife's feet or legs while she permits her bull to have her pussy and/or mouth whenever he desires it.
Please, share your thoughts.