How to add more body parts to custom armor

So, in my mod I want to have a cloak, which will either be in the chestplate or helmet slot (I'm not sure), but my problem is that they only support arms and body for the chestplate and head for the head. Is there any way to, for example, have a 3D-modeled chestplate that also has some elements on the head? Otherwise, it would be good to see in future updates. Any ideas?