The place where you got the sample should have or tell you where to find a slab. You can take pictures of any different slabs sand use that to try some layouts based on your counter config. Be sure to anticipate how two cut pieces will meet in a corner, if you have them. Getting a good layout is something you have to keep control of when you communicate and deal with a fabricator. Make the layout subject to your approval. Make your inspection of the cuts and approval a requirement before you OK delivery and installation.