Amidst all the praise and excited applause, I'm going to be the wet blanket and give you... Constructive criticism! : D
I've noticed a bit of a trend with your armors. They are all incredibly well made, sturdy and authentic. Each individual piece is a marvel to behold in itself. HOWEVER, it's when you put all the pieces together that things could be better. I've noticed the fit on a lot of your armors (especially this one) could use some more work.
Building the internal skeleton of a giant armor to make it sit comfortably and move realistically on a human-sized person may be one of the most tedious and boring parts of a build like this, but it's one of the most important steps for creating something convincing. Making sure the person wearing the costume can move freely without having to worry about parts coming loose or slipping down into unwanted positions is really important, and judging by the video on the Tested channel, that's where this particular armor falls short.
One last thing I want to touch on is the detailing inbetween the large pieces of hard armor. In fallout 4, pretty much all the gaps in the armor are filled with little mechanical details from the armor "frame" underneath which makes it look very convincing. I'm not saying you should build an entire armor frame to go underneath your already amazing armor, but adding a bit more details to fill out the gaps will make a ton of difference. Right now it looks like you're using a big set of janitor overalls for an undersuit with the armor pieces loosely attached to the fabric using velcro rather than the sturdy mechanical shell that is the T-60 power armor.
Again, I want to stress that the armor is still incredible and is pretty much THE best T-60 cosplay armor that exists. All the points I bring up are just things that could elevate it even further.