Hold the PCB and mounting bracket together while inserting a machine screw through one of the mounting holes. Use a screw driver to fasten the screws into the brackets. Fasten the threaded inserts to the screws tightly to secure the parts together. Reference the photos for correct orientation.
Repeat the same process to secure the Prop-Maker FeatherWing to the mounting bracket. I used needle nose pliers to tightly fasten the threaded inserts. I found hex jam nuts to be too big for them to sit beside the headers.
The orientation of the Feather PCB and Prop-Maker FeatherWing are in a way where the micro USB connector isn't easily accessible in the hilt. Use a micro USB cable and micro USB breakout board to create an extension. The microUSB breakout PCB features two mounting holes that can be used to secure the PCB to the Feather mounting bracket. To create this, I cut a micro USB cable (one with data wires!) and soldered it to the pins on the breakout.
Orient the two PCBs so the headers and pins match. Carefully connect them by firmly pressing them together. The wiring and cables should be kink free with enough wiggle room.