Sounds like a fantastic session and I agree, Mistress Kang continues to dazzle with talent acquisition. Back in the day, I was lucky to have an unplanned training session with Mistress Kang and trainee Mistress Rey(I scheduled an hour with Jessy, but when I arrived she asked if I minded if a trainee joined) At the end of an awesome 2 hours, I asked Jessy where she finds these exquisite creatures? She slapped me across the face and said with a big smile "Thank you, but none of your business".
I can relate to your painting/canvas analogy. I once described a fortress session as "performance art" wherein the sub is simultaneously a prop and participant. Victim too.