Sex doesn't necessarily have to turn into bedroom olympics...if you like what you're doing and happy to experiment that's great......but it's a shame to get hung up on the "position" stuff when it's the "being together" stuff that really counts. I love it that you are wanting to spring some new moves on him, but is that to try and distract him from persuing
anal? Most of the stuff that works for me I've discovered by trial and error......and it's okay to make those too! The fun bit can be the discovery rather than reading it in a manual.