DIY Dark Galadriel Costume Tutorial by penwiper at Entropy House here. The breastplate is made from a cheap half form mannequin and round sticker labels - seriously!I googled “half form mannequin” and found one for $4.90 here - so they are easy to find. The rest of the paints, puffy paint and Rub’n’Buff can be found at any craft store.
DIY Easy Lace Up Corset Back Tutorial from Zeloco here. This is an excellent and easier than it looks tutorial. There is a tiny bit of hand sewing.
DIY Steampunk Bicycle Chain Choker Tutorial by flyingpuppy on Instructables here. This is an entry in the Instructables’ jewelry contest. You can switch out a lot of the harder to find parts with hardware store supplies. Someone asked in the comments if this was comfortable and flyingpuppy responded:
I’ve worn it and it feels quite comfortable. There is nothing sharp touching the skin.
DIY Steampunk or Cosplay Inspiration: from Yohji Yamamoto Spring 2007 here. This would be such an easy DIY.
DIY Steampunk Sylus or Ring Tutorial from Rob at Instructables here. This is so much easier than it looks - it’s made from the handle of a plastic milk jug. I’ve also seen rings like this on Etsy made of metal and of course pushed back on the finger. First seen on EPBOT’s Saturday Steampunk post here.