Stretches or Yoga for Sexual Wellness

Hi everyone, I recently started doing stretching routines before masturbating, in order to stretch my pelvic floor and allow myself to relax, both mentally and physically. Suffice to say, my orgasms are incredible, and I generally feel much better in my body.

Unfortunately, my stretching routine has been mostly freestyled, just doing whatever feels good, whatever my body wants. Does anyone have any targeted stretches to relax the pelvic floor, or the jaw/neck/shoulders area? The latter is one that I still have a lot of pain in, and I think figuring out how to relax and stretch that would heighten my pleasure further. Thank you for any and all tips!