Final Fantasy Hacktics

Ok So this is my first time replacing sprites and I just wanted to play around with the looks of the sprites. i want to replace ramza with the Altima Second Form sprite. I exported the SPR then I tried to import it and replace the ramza sprite, but it said that it was too big and that the max size was 45056 bytes. I am unsure how I am suppose to reduce the size, so is there any way i could possibly reduce the size so i can use it? Much help would be appreciated thank you!

OK I'm trying not to get angry because when I changed the FFTA.SYS file to lioneditor.bin
It gave me an error when I tried to open it so I moved it to my desktop and then it opens but nothing loads so it's still blank so I'm getting very confused on what I need to do

Ok So I just wanted to see if it would be possible to make the mediator's spells work on ALL enemies because when I try to use entice on those gargoyle looking guys later in the story that turn you into stone they ALWAYS block it and I just wanted to know if it was possible to make entice work on any entity. Also if it is possible would it break the game if you bring a character like a boss character for example onto your team? 

Still thank you to Toshiko who's always there to help others on this thread!
So I dont have any more problems with Lion Editor because all I had to do was move the Lioneditor.bin file to my desktop then I was good to go so I have been playing around with my stats and patches so yea im good to go!

Hello I am still new here and I still need to know a lot about hacking FFT Wotl but before I learn about spriting and all that I would like to know what does Lion Editor and FFTPatcher do? because people have told me that to achieve what this guy has done https://www.youtube.com/watch?v=uYaBE70TMoI
If you look at the video it shows his Hp Damage and MP at 999 and his CT maxed out his level at 99 his exp at 99 and his job and abilities are also hacked.

So back to my question i'd really like to know what FFTPatcher and Lion Editor do because I am pretty sure they are the key to letting me do the same hack as the guy in the video.
Thanks for all your help guys and those of you who looked at this and have the answer to my question but didnt reply you've made me sad but to those of you who do reply thank you sooo much!

I am a new user to this forums and i'd really like to know how to do what the guy in this video did https://www.youtube.com/watch?v=uYaBE70TMoI

Things to know before helping
1.I okay Final Fantasy tactics war of the lions on my android phone/tablet and I use ppsspp emulator
2.I wanna do what the guy in the video did for example
hacking my health to 999 MP to 999 Ct to 100 have the class deathknight and all the moves hes using in the video also damage to 999
max level max exp.
3.I have no experience in spriting or whatever that is

So now that i've explained the things above id really like to know how to do what he did please!
hopefully if I do get a good answer it will help me make my own hacks and crap thanks guys!