Don't be hasty to start your own mod; all our FFT modding projects are greatly understaffed. Find out how you can help in the Recruitment section.
I don't think those are in Shishi so someone may have to screenshot it from the emulator and cut it from that screenshot.
Those are able to be found. I have never been able to find the palettes for the knife pointer, but that is easy enough to create. ShiShi can't do it, but we could use other programs to grab it which would likely be better than getting it from the emulator.