There are 10 LEDs used in this project, four wires total. LED Sequins have built-in resistors, so this makes wiring super simple. We can add strength the strip by looping the wires in the through holes on the sequin PCBs.
To keep the spacing for each sequin, we'll leave the LEDs attached to the PCB until we solder all of the connections. We can then gently bend the sides of the PCB to break them away.
The + side of the sequin are connected to the SW pin on the coin cell breaout.
The - side is connected to one of the Gnd pins on the coin cell breakout
This provides a visual reference for the wiring of the components. They aren't true to scale, just meant to be used as reference.