1. Count the number of tiles across the hallway is. Divide the distant horizontal floor line into that number of parts. In this case, I've used 8.
2. Use the vanishing point to extend all of the columns of tiles forward.
3. Go to the end of the hall and count an equal number of tile rows toward you. Mark it with a piece of tape, or note if it is tangent to a clear landmark, such as a door frame. Back at your drawing position, use a visual proportional check to decide where this point would be relative to the other established proportions of the hall. In this example I have decided that eight tiles forward fit in the same approximate space as four tiles across. Draw a horizontal line at this point.
4. You now have a square in perspective, divided into an equal number of columns. Draw a diagonal from one corner of this square to the other.
5. Where the diagonal crosses each column line is where you will draw the remaining row lines for your tiles. Note that the diagonal automatically makes tiles look bigger as they get closer.
6. To continue the tiles towards you, simply extend the diagonal of any of the existing tiles forward and draw new horizontal lines wherever it crosses the column lines.7. For other kinds of tile patterns, such as brick, simply follow the steps above and erase every other column line, staggering the rows.
