Your quilts are beautiful, but I think I know what you mean about
the "wow" factor. I think it is not so much a "wow" it's just that they don't "pop" Jinny Beyer has an excellent video on you tube:
http://www.youtube.com/watch?v=l9xV73VpccA
If anyone knows how to get that "wow" factor it's her.
I think every quilter should watch it twice.
She does know her colors. JMHO.