Tradeshow graphics are like posters, in that they should not be overly indulged with written content, but should be somewhat intense/engaging visually. The main objective of tradeshow booths, pull-up displays and banners, is to draw a passing tradeshow attendee into a particular booth so that a company's representatives can engage in a 1-on-1 discussions where the rep can try to sell the booth visitor on the reasons why they should choose them to do business with. It is about getting a conversation started. Beyond that, the main challenge of putting larger graphics together is that your images have to be very high-resolution to go that big without looking pixelated. This is something that clients often don't understand when they give you photos they pulled from the internet. :o)