Make custom pokedex skins in pokemon bw2

[matternet]

Hello, I was trying to customize my pokedex in pokemon black 2.

I made a image with the correct amount of colors and pixels 258 by 192

I used pokecgear to make the .bpm image become a .psd and then used pikaedit to add the .psd to the game

But when I open my pokedex, the image isn't working properly

Can anyone help me?

(Just a bit of context, the image is of two philosophers I like)