How to be a "freak in the sheets" lol

So I'm pretty shy/conservative with a dirty mind lol but I've been married for going on 4 yrs now and soon my husband is going to be gone most of the time on the road for his new job and I want to be super freaky and kinky for him but we've been together for so long and I'm still in my shell.. He is very open and dirty and I just struggle so bad with the dirty talk and all that... I'm better than when we first started having sex but I want to be more open and whatnot. Especially now that he'll be gone for except maybe 3 days most months I really want to give him the time of his life and be seductive and stuff so he'll be looking forward to lots of fun when he is home lol.. Of course I'm insecure, that's why I'm hold back so much but I'm working on it and I'd just like some tips to give my man the time of his life. He's not vanilla at all, otherwise I wouldn't be asking for tips from the freaks out there lol. He is very kinky and dirty and down for literally ANYTHING, which I think is awesome in my head but outside I struggle to take action on it... So from those really kinky ppl out there what should I do??? We have some games and cards and toys and like to role play with texting like strangers and we've tried quite a bit, his favorite is anal and all things butt stuff tbh. Its mainly the dirty talk I struggle with tbh but any other tips are awesome