Designing a PCB Shield For My Senior Project

I need help designing a schematic for my pcb sheild. I know how to use the PCB design, so I can show what I want to make with pcbs but I can’t design schemtatis for the life of me. I know the vision but I can’t execute it.


The shield is supposed to simplify wiring to avoid the spegetti monster that is 8 pairs of 14 guage wire per section. Of course I could make the project without the pcb. but I would like to have a “finished product” for my final. (This isn’t for college, only highschool) The goal here was to solder the necessary items into the wire holes so that It would be easily replaceable and nice to look at.

Is there any yt videos that could tell me how to make a sheild from scratch?
also each wire should be only pulling on 16v 1.5A max.
The 16V was from the vex battery charger(a kind of weird number)

Sorry this forum concentrates on questions about using KiCad. General electronic circuit design questions should go to other forums, for example EEVblog.