Wow, gorgeous blocks, ladies! Love the contrast with the darks and lights. Whoo hoo!
Looks like Dottie has an I Spy quilt going on, or maybe will turn it into a Where's Waldo!
As to the flannel question, I will weigh in with my humble opinion. I won't use flannel in a cotton quilt, seems as if even when preshrinking twice, my flannel squares still shrank!