A lot of how you display and merchandise your items depends on what you make and sell.  Are you items big or small?  Do they need to hang?  Do you have a lot of different items or just a few?  You have a lot to consider when deciding on how to merchandise your items.  There are also factors like the size of your booth space and how you will transport your products and display materials.  

You might not start out with the best display for your items but a lot of creating what is best for your items starts with looking at what others are doing.  I make it a point to every show I do to walk the show.  I am not only looking at what others are making and how they are pricing it, I am looking at how they are merchandising it.  I have picked up lots of good ideas from looking at how others merchandise their items.  Some people choose to pile up their items while others like to spread them all out on the table.  Then there are people who have very elaborate displays that they need a trailer to transport.