Hi Karma,
Here's one model of Bane,although I am not sure which one you prefer:
https://www.models-resource.com/mobile/injusticegodsamongus/model/17971/
As an alternative you could use a bulky model (e.g.: Colossus) as a foundation for your suit where you then add detailing afterwards with 2mm foam:
https://www.models-resource.com/mobile/marvelscontestofchampions/model/17088/
My advice would be to divide the entire figure into separate sections that you scale individually,otherwise it won't fit you.Then open and unfold in pepakura designer 4 (free software).
-Put templates on roll of EVA foam
-trace and cut out the pieces with box cutter/hobby knife/Exacto knife
-heat-seal them briefly with heat gun
-use glue gun to connect them
-three layers of mixture acrylic gel+white woodglue
-paint with acrylic paint using foundation brush (little/no brush strokes)
The last two steps come from a tutorial made by @
Cyehra (see youtube: how to plastic coat your foam)
That should help you on your way.Good luck ! ,and ask away if it's unclear