I love the tension and the surrender. The way the gag is being held (or has been placed) is perfect. And the pose and how it makes the muscles stand out is like physical poetry. I am going to have to add you to my watch list to see what the 'new stuff' will be. Congratulations on the DD!
You left off the vertical spike coming up from the floor barely an inch away from piercing your lower back...giving you incentive to remain in the arched position! Oh wow...forgive me...I'm getting carried away.
Wow, that would certainly make for an intense shot! What I want to try using as a prop sometime is a piece of bamboo running under the arch of my back and propped up so as to force my back into an even more intense arch...or something along those lines. : )