Here's my Owlman from Crisis on Two Earths. Since directly translating the design to a real costume might be essentially impossible (a metal cape that swings around and also an armored exoskeleton that looks like spandex?), I took some liberties with the design of some of the parts, but tried to keep the overall forms and shapes the same as what we see in the movie.

Undersuit and boots started off as parts from the HT Batfleck. Boots were cut apart and modified so that they would allow a greater range of movement in the ankle. Added on pleather and black carbon fibre vinyl sections onto the undersuit and boots, and sculpted torso armor pieces, helmet, and boot covers from apoxie and some plumber's putty. Eyes are separate resin cast pieces inset into the mask from inside, and allow him to look around. Owlman's face is removable from inside the helmet - might make some swappable faces for different expressions later? Hands were some extra 1/6 hands I had sitting around that I sculpted gloves and claws onto. Neck gorget is a piece of a crown royale bag with some vinyl ironed onto it. Cape is pleather that has been covered in a silver carbon fibre patterned vinyl.

Let me know what you guys think!