Borrowed from blueprints and pencil forms built in the architect albums. What if a terse style obtains a playful form? Something less strict like watercolor will create a balance of chaos and order in one photo effect.
Edit your photos of buildings and interiors in a unique way! After applying the effect itself, you still have something to be playing around with: 10 duotone overlays come in the package, see which one can enhance the composition. Watch your image getting remastered into a watercolor masterpiece, covered with pencil strokes!