I like the transparency where the sheets meet of #55. I think I'd prefer darker, maybe jewel tone, colors.
I think #122 loses the fact that these are sheets of paper because there is no tranparency where the sheets meet. Flattening the sheets (less angle) might also help.
127 & 129 remind me of a bird, a phoenix. We would probably not be able to use on a black background, although on black, it looks like there is a black outline between the sheets that I cannot see on the white background of 148.
On 148, I'd also like the point where the sheets meet to look like #55.
57 is a good representation in b/w.
I appreciate the work you've done, and hope we can tweak these a bit more.
Thanks.