If your coffee table has a lower shelf you don’t have to fill both levels but if you choose to try lining up the items on each tier. Use two pairs instead of threes and don’t forget to play with heights. A lidded storage box or small basket can help keep the bottom level looking sharp while giving you a place to stash items like remote controls.
Solid tabletops usually have a very square corner. If you have little kids or the circulation is tight allow extra space at the ends so it’s easier to get around the corners without hitting your shins. Go for color with an upholstered coffee table as it will draw people to the surrounding sofas and chairs. Top it with a tray to hold books and other items (and to soften a strong color such as the pink).