FF6 style GBA adult Rydia

::EDIT:: current progress:


A few years ago I started working on a FF6 style Adult Rydia sprite sheet. I posted about it here, but I uploaded the image to the forum which in turn was deleted and the thread lingered and was closed. then my hard drive went belly up. =( I found a copy the other day though and I decided to finish it. I have seen a few Rydia sheets floating around, but they all seem to be made from the ground up and incomplete. mine are based off of the GBA port and I think they look great. I think I'm convert it to the SNES colors though.

Is there a sprite making tutorial or thread with info I can use? I Have some questions and issues.

I downloaded FF3usME and exported a sprite sheet of Terra and just started copy/pasting my Rydia sprites on top. when i try to import my sprite it spits out "Pixel data eeper than what SNES palette can hold" how do I rectify that?

After reading up I realize that the sprites all share palettes. I also read that you can use a hex editor to assign a sprite to use an unused palette? can anyone expand on that? what is the best method of importing sprites that need a unique palette?