I decided to be a Homemade Gold Fish Costume, but cute. Orange was the color I was in love with at the time.
First, I needed scales; I found a light salmon colored old lady sequined sweater at Goodwill. I dyed it with RIT orange fabric dye. The boiling process curled the sequins so they looked even more scale like. I took in the top by hand to be a little sexy. I found an orange satin bridesmaid dress at the same store; I cut the skirt off and made it much shorter. I sewed a homemade tulle tutu to puff out the skirt to be my fluffy fish tail. My hair was dyed bright pure orange as well, a color difficult to maintain.
The makeup was really the focus. I was inspired by a face paint design I found online and altered it to match my idea. Originally it was a swamp creature design, dark and scary. When I was done, I was cute. Oil based, professional face pain worked best, though expensive, it last a long time and has made many costumes come together.