Looks like it's this challenge:
http://www.quiltingboard.com/t-96494-1.htm ...doesn't look like are any specific rules, just make a pinwheel quilt.
Those blocks are wonderful. I know you said it was from a 5" charm pack, put how big is the finished block?
(Your picture isn't really clear as to the colors (BG or PW) so I'm not trying to match up exactly):
If those blocks were mine ...I would go straight to a great border....something like this
(which I happen to have sitting right next to me - if you want a strip to try, PM me your address):
http://www.mountainviewquiltshoppe.c...es=0&lastmenu=
or a funky stripe:
http://equilter.com/cgi-bin/webc.cgi...16111307504.1f
You know, something with pizazz. (And more of the plain background, I think, will just make it.....meh.)
Maybe the width would be 1/2 the size of the block measurement. You don't want it to overpower the blocks. And I don't think I'd even bother with a smaller inner border.
The other thing I would do is to turn the whole thing around so the matching sashings are to the left and bottom, but I suspect that has more to do with my own anal retentive condition than your layout. ;) :roll: ;) :roll: ;-)