Move Minecraft Mine-imator Skin?

I'm trying to create 3D thumbnails with Mine-Imator, with Minecraft Skin Rigs. I added my skin, but now I have a problem: there's another skin in my skin. How can I fix that both are moving in sync or the lower skin is removed?

I know Blender. But I wanted to import a world directly, but couldn't find a suitable shader for it. The world always looks pixelated and takes a long time to load… Try Cinema 4D.

You don't necessarily need a world. A free minecraf background is enough.