Are you a designer or an exhibitor looking for advice?
Small or large booth? Small or big budget?
There are dozens of variables, so this is no one-size-fits-all solution to booth design. In general, though…
Make sure the company’s name and logo are big, easily read from several booths away. This usually means it’s the top thing on whatever sign you have, and that it’s above people’s heads, so it can be easily seen without traffic blocking the view..
Come up with a very short, one-sentence description of what you do, make, or sell, so people don’t have to ask you. Make it second in the visual hierarchy — usually immediately beneath the company name and logo. If people have to ask what you do, most will just walk on by.
Don’t just set up a table with people sitting behind it. You want the booth to be approachable and inviting, not an awkward social situation with tables and obstacles in the way.
Keep the graphics bold and simple; don’t clutter the signage with slogans, bad photos, or bulleted lists that no one will read. Besides, people will likely be standing in the way unless you have a big, open corner booth.
Give people a takeaway, like a well-designed brochure, that aligns with the company’s and booth’s branding.
I could go on, but as I said, there are too many variables to provide anything but general rules of thumb.
I hate pointing at online information below, but I generally agree with what’s said and written, so take a quick look.