I don't remember who passed on this idea but I used it the other day. I don't have any of the computerized software that I can play with my fabrics so I tried it. Find a color copier to make a "copy" of each fabric (my scanner and regular color printer did NOT work for this very well) and create a couple squares out of the paper. Color photocopiers aren't perfect with every color but they come really close. You can see what the block will look like before cutting into your fabric.