Looking for a geckolib armor model

Anyone have a base GeckoLib armor model file for Blockbench?
I know there is a preset option that gives you the bipedal model with armor bones, but I can't for the life of me figure out how to make an armor model similar to that of vanilla's, for me to add some extra on. (with the helmet, chestplate, and boots on an upper layer and leggings on lower)

Like, I just want to add some little touches to armor models, not try to mess around with scaling and cube sizes for hours.

:P