Creative wiring

Some electricians may say this type of modification is against code.
It's the conversion of existing switches to a 3-way without exposing any wall studs. All new wiring was made in the attic. The compromise was losing the small light over the sink -- its switchbox is shown at lower right.

However, all connections were made inside standard boxes, all grounding wires have been grounded, and all Romex cables have been properly anchored. It's safe. It works. It's just confusing without a diagram.