New to kinky 😅

So I totally need some advice, please no judgements or hate, this is really awkward for me to even post about even if doing it anonymously. A little bit of background: I'm really pretty vanilla when it comes to sex 😂 but I am open minded and willing to try stuff with my hubby. I knew about his kinks before we even started dating, but it's kind of hard for me to get into the zone.

Well from here on its the sex talk...

He has a cuckold kink (which we don't act upon as I refuse to do anything sexual with another person so we came to an agreement)

He also likes to be dominated, and embarrassed (told he's not able to satisfy me and has a small penis and such).

I'm having a hard time thinking of anything to say or do in the dominatrix/embarrassing department, I've never been one to embarrass someone or belittle my significant other so it's hard to get into that zone. I'm also not really a dominant/demanding person...

Any tips or advice?