Concentration is divided into three aspects: designing, filling, finishing:

1. Designing: Whatever one is concentrating upon one must first be able to form the outline of. This faculty can be developed by observing and taking in the outline of the object.
2. Filling: Filling has its two aspects: i) filling with the parts and items that compose the object, however minute; ii) grasping the right sense of the color. The former comes from the analytical observation and exactness in taking up the object into one's mind. The latter comes by the development of the sense of color, which is a natural faculty in man.
3. Finishing: Finishing is again going over the object one has in mind with an examining attitude, and noticing every little detail separately and collectively, and comparing it with the object that the eyes have seen. This requires not only an analytical tendency, but also exactness and development of memory.