No problem, the flight suit is from BobaMaker, the only modifications I made to it are sewing a couple of pieces of elastic to the wrists to help keep the sleeves taught under the gauntlets. The loop goes over the thumb and back down, gloves cover. The suit was a little long for me so instead of altering I just bought some cheap suspenders and clip the back clips to the seam at the waist and pull up the waist at the front until the crotch fits correctly then clip again. This is all covered by the flak vest so no worries. I've got the soft side of Velcro sewn on at the knee caps and waist to help hold those pieces on. For weathering, I got the suit wet and used a spray bottle with acrylic paints to weather. Mostly browns and blacks, very watered down. Once it dried I used the same colors in the airbrush to hit areas that needed to be darker, pouches, seams, etc. Finally, I sewed a clip into the right sleeve that the gauntlet hoses connect to.
For the flak vest, it is also from Bobamaker, I weathered it with the airbrush with soot colored black. The plates are connected via jewellery pin and clutch backs, think tie pins. These are held to the plates with jb weld. Aligning the plates was the hardest part but this method allows you to keep trying until it is right. Once you've got everything aligned, make sure your vest ends an inch or so from the bottom of your bottom plate, otherwise it looks off. I used the button hole maker on the sewing machine for the holes for the straps and bar for the jp harness.
Let me know if you had questions about anything specific besides that.