Oh my goodness Woody, these are spectacular. I too have just taken my first tentative steps at needle turn applique and started my first block last night. I am not as ambitious as you, though. I chose a much simpler applique for my first but your have inspired me so much with your beautiful examples.
I have found I really like needle turn applique. The inside corners give be a bit of a fit, even with clipping them but I am getting the hang of it. Judging by your pictures you appear to have mastered the technique. Simply droolworthy eye candy.