what were you using to fake your tits on your Tashigi crossplay? I want to crosplay as Star Sapphire, but I didn't know how to fake her tits until I saw you...
I made them from silicone, and it was a bit of trial and error to figure it out. I made life cast of my chest and sculpted them in clay. Then built a mold and cast them. If you are interested in trying, start researching silicone appliances.
Special Makeup Effects for Stage and Screen: Making and Applying Prosthetics [Todd Debreceni] is a good book resource
Neill Gorton’s Creating Character Prosthetics in Silicone DVD set is also a good resource.
If you have any specific questions you come up with I can try to help, but the whole process is a bit involved to type out. Good luck
PS Depending on your budget there are companies that make something similar. One is Realbreast and there are others but they are very expensive. No that what I did wasn’t expensive, just less so.