Does anyone know where to find more in depth cosplay how tos?

I'm looking to cosplay as Reinhardt and I have found quite a few people that have done it, but as someone just getting into foam armor crafting I am going to need a little more help than pictures can provide.

So, I'm curious if anyone has / knows of patterns(such as the papercraft helmet pattern), or at least knows of a more in depth guide on how to make Reinhardt's armor. Or even (which would probably be much better so I know how to do it for future projects) a guide on how to convert the reference pictures to full scale.

In short, any help at all would be wonderful.