My custom skin pack in XBOX ONE (finally!!) Yea, just already found the evidence on how to add the custom skins to the exact console that I've been waited for long enough!
Buy Minecraft Festive Skin Pack | Xbox
MineCraft - Xbox 360: Free Skins for MineCraft - How to Get Free Skins in MineCraft for the Xbox 360 - YouTube
Minecraft: Xbox 360 Edition Skin Pack 6 out now – XBLAFans