Review the circuit diagram. This illustration is meant for referencing wired connections. The length of wire, position, and size of components might not match the actual project.
I've had success with this method with a small number of LEDs. For a larger project, you should review the voltage drop on the signals coming in to a data in. If the wires are long or go in too many directions, the signal may not be strong enough to drive the data along the strand.
This approach allows us to create a dimensional array of LEDs without doing extensive mapping: the LEDs on the right and left as well as the pieces along the waist and under the bust will show mirrored animations.
The sections of pixels will be reviewed in detail on the next page.