i hav a pep file by Bvbr&HG and its great and i want to make it for the halo figs like i did with my warthog.How can i get it to be strong and durable after i pep it.Like gt the resin and matte on the inside but how could i do it,should i build it in pieces then FB them and then together or what?And how long should i scale it to,right now its at 945mm(about 37inches)THANKS