Can you explain 2 layered? If I understand the concept fully I MIGHT be able to help you out.
also, what pony accents are you interested in, on the armor? Like, race specific accents, armor type specific, etc.?
If you ever saw how the armor textures look, you'll see that they are made in two layers, making them look kinda 3D/with depth. The best example of that is seen when you look at the part connecting the legs and leggins - the boots seem thicker. It's due to there actually being 2 models layered on each other, each with a transparent texture that has only part of the armor drawn. Again, best to see in the minecraft files or I could send you the files directly on a priv or e-mail.
Either way, I'd need the armor to be remade to fit the minelittlepony format - meaning it would need to be lenghtened and almost entirely remolded. The accents I was looking for were for example a different shape to cover the flank (more like medieval horse armor or canon show armor). I guess the specifics could always be discussed in more depth when needed - as I'm creating the mod solo, I could add all sorts of additional flourish to the armor model.