Look for a tutorial by Bassman58, you can find it from the main site under 'Live 2005 Tutorials', and there's also a stickied thread with a link in the Live 2005 Patching Issues thread.
I've used the techniques from that tutorial before, and for most jerseys it's great. Howevr, since it gives Live 2005 style previews sometimes the number placement will be off. Does anyone know how to change number placement in the preview screens?
Yeah, EA's defaults are longer, but that's the case in 05 too. Don't worry too much about getting the preview right, just make it so it looks right in-game.