I just don't get the point of this book! Hasn't everyone already made color charts of their supplies? Why do them again? Mostly, though, I think the boxes are way too small, particularly if you do your color charts as I do, and include pressure differences in each pencil. The book doesn't seem handy either, as you must keep flipping pages to find your color within a large set. I prefer having larger pages which hold more color swatches per page. There are probably some who think this is one of the greatest things ever, and I'm not disparaging their opinions, just offering my own.