I don't like the color of #10, but I do like the scope of it. I agree that it keeps the others from looking too matchy.
Maybe something in a similar print/scope but a better (darker) color?
The others are good together colorwise, but they're too much the same pattern wise. 6 polka dots is a lot. What about a dark tone on tone something?
#2 and #6 are a nice combination colorwise, but they seem too much the same in the style and size of their print. Do you have another fabric in that dark pink that could work?
What about some tone on tones? Actually I'd take #12 out, and add a complex floral.
Right now there isn't any one fabric that "anchors" it. And there's no "wow" fabric, one that makes you smile.
Good luck! Have fun auditioning fabrics!