I have four presentation folders (nice ones) and they are split into wedding bouquets, weddings event work, funerals, gift bouquets and modern designs. I actually just print pics off as a normal pic at the asda and then stick them on black card. The black gives them a really nice background and can make a photograph that isnt professional, look more striking.

I then put prices on all funeral stuff at the side of each pic with the sizes they come in and the prices accordingly. I then give the cust the book to look at for five minutes in peace before i go over and assist.

Hope this helps!! and like the others say you can just keep adding to it. Take a pic of everything you do, some on here use tents but i put my stuff against a dark background when possible.