I started to work in a Royal Guard TFU costume. I have boots, gloves and belt from my imperial officer.

Just finished 3D printing the helmet and now I need to glue the 22 parts together and then cover it with resin.
Under suit: Red Kap Men's Long Sleeve Twill Action Back Coverall, Black, 48, Black'.
In this forum I see files to print the saber pike. Are those good files to have an approvable spike in your experience?

I also found files to 3D print a storm trooper armor but I don't know where to find a file to print the back piece or maybe the modified shoulder bells. Can anybody provide any help with that?
hopefully, I will be able to upload pics in a few days.
Thanks in advance for your help.