Hello and welcome,
To start off and sense your saying your going to use Infinite mk Vii many people would find the armor base and color coating they like and take pictures of it in game for reference and inspiration. You can use this thread as a documentation of your build and though process as well as getting advice.
After you know exactly what you want to try to build you pick your build method. The most common down days are 3d print and foam smithing.
3d printing is pretty straight forward your using a 3d printer and your preferred choice of filament PLA, PLA+, PETG, ABS/ASA, TPU what ever (my suit is fully printed and is PLA).
Foam smithing your will be using paper print out templates (most likely) or free hand cutting and shaping of foam sheets (often high density between 3mm and 10mm some people use those 10mm exercise mats).
After you pick you materials you will want to find your desired armor files. For 3d printing you will want your STL files, for foam you will want the PEP files.
This should help to get you started. many members have an intro tutorial guide copy pasta I'm sure they will chime in in the next 24 hours or so.
Welcome to the community we have tones of free resources and tutorials on the forums.
Billeybob250.
