I've bought the idea of getting an ergo keyboard for work, but it's too expensive to buy one from where I live, so the last days I've been learning and designing my own.
I know it won't be as good as a manufactured one but I really want to see how the result will be
Depends on what they want. Inkscape is perfectly fine for plate design, which you can then lift using standoffs, like the Steel Tormentor.