Sadly I can't help, I've never tried to do this so its outside my knowledge. But systweak isn't a program, it's a sysmodule like sys-clk, tesla, etc. You just drag a drop it on your sd card. As for how to change the author name, etc. I have no idea
@binkinator may have some ideas.
But here's the github link if ya missed it in my last post
https://github.com/p-sam/switch-sys-tweak