I did spend the time to find 3d models on the web to plug into my 3d views and it was definitely helpful. Rather than paper, I think you could Kicad-design a 2

I did spend the time to find 3d models on the web to plug into my 3d views and it was definitely helpful. Rather than paper, I think you could Kicad-design a 2D grid of holes matching an existing proto board (https://www.amazon.com/ElectroCookie-Solderable-Breadboard-Electronics-Gold-Plated/dp/B07ZYNWJ1S https://www.amazon.com/ElectroCookie-Solderable-Breadboard-E...) and then do the placement and routing in Kicad, and then finally assemble the board in place. To avoid fritzing.