Each emery board has 2 sides to shape and smooth the nails. The coarse side shapes nails- while the fine side smoothes and finishes.
To use, hold the emery board at a slight angle just under the nail. Beginning with the coarse side of the board, start on one side of the nail tip and work toward the center. Then file the other side of the nail in the same direction.
To prevent splitting, file only in one direction. After shaping the nail as desired, use the fine side of the board in the same way to smooth and finish the details.Make sure to replace the file when worn.