3D Skin Question

Hey guys =)
I have the following problem = (
I have saved the image on the desktop from this forum (3D skins) and opened it with Paint.net ... saved again as png 24 then done in the folder graphics and created the confic ... unfortunately I will still in the 3D game that Jersey only in one color displayed = (without logos or other ... what am I doing wrong or where is the problem? Could one help me? Eventually a step by step guide or similar!? Lg from Germany


here are the two files =)

https://ibb.co/ZSdJ4w5

https://ibb.co/NZHTpZ7