I've succesfully created and brung a jersey into my game, but here is my problem.
First, there's the buni with 512x512.

I know that game and the numbers don't suppert them, so I resized it to 256x256. There's what the buni looks now.

It still looks okay. The detail of the side has gone, but the quality is still alright, overall.
Now here's waht it looks in-game.

The detail has gone completely now, the logos are damn ugly, so are the trims.
My question to the jersey patchers is, how to resize or whatever that buni that it still looks good ingame.
Or I might do something wrong with the alpha, damn I've no idea.