Books!!! Looking at pictures of quilts, noticing what catches my eye and figuring out why that quilt "works" for me.
Fabric collections by manufacturers, what they have put together with their "theme" print.
Quilts of national/international artists I admire; paintings that are well known....how their color is used, in what amounts, what color alongside/against another, how they create depth, focus, line, eye movement across the piece.
I LOVE this part of quilting!
Jan in VA