Clear a space in the left-hand corner of your room. Your table will go in this corner, because positioning it against the walls prevents your quilt from falling over the side of the table while you work on it.
Measure two tables to make sure that they are the same height. They are going to be pushed flush together, so their edges must line up perfectly.
Place your first table flush in the corner of the room. When you are facing the wall with the corner to your left, the broad side of the table should run along the wall in front of you, with the short side of the table running along the wall to your left. Place your sewing machine in the bottom-right corner of the table.
Place a second table along the wall to your left. It should be perpendicular to the first table, making an upside-down "L" shape. Press the two tables flush together to form one large table. This gives you space for catching the quilt you are sewing in your machine.