Here are 3 effects layers you can add to give some more detail to the jerseys. A Buttons layer, a White Piping layer and a Black Piping layer.
I dont have the original links, nor do I recall who the original creators were. Somewhere along the line, ive collected layers/ideas/images from Batboy, Deft, NoPepper, Silvan, Reds1, Athletics17, Davwms, Tombair, RY1220 and others. So credit goes to the 'collective'!.
(the black dots in the corners are there to make sure I keep the layers aligned properly.