I came across a nice visualization which helped me get a beautiful session.
The goal being to be as receptive and passive as possible, I try to imagine the feelings of a woman being penetrated. I imagine a woman next to me, explaining how she learns to relax. The image she uses is to lenghten her vagina, stretching it mentally downards while relaxing. I try to apply this to my own body. In order to feel the stretch, she can delicately insert her smallest finger and study the sensations (but I'm not allowed to do the same, I may only use my imagination).
I imagine I am in her place... I imagine I am her.
I dated guys with big dicks and taught myself to open up, stretch and lengthen my pussy and get wet. The more assertive the cock was, the less assertive I had to be myself, because I had to adjust to the cock. Now i'm fucked by a lover with the thinnest penis possible. Sometimes I don't even know anymore if he is in or not... He is strong and muscular and I love to feel his weight on me. He is also a great kisser (which I crave). He can come in and out without my pussy wanting to fight nor grab his cock. This relieves me of the pressure of adjusting to the penis, everything just flows naturally. Sometimes my pussy squeezes his dick (and it grows a bit thicker) but it’s my fault, and it feels great anyway, as if my vagina teases it to the exact girth it needs.