You can just not use the template skin. Use your own skin instead.
Use the steve from our template, make copies of them if your wallpaper has more than one player, or if you prefer, add the [player preset] as you did with the other resources from the minecraft pack.
This is only if you want to post your wallpaper here in Novaskin. If you’re not to post it here, you can just use your own skin and render it without doing the background and layers rendering stuffs.