I'm sure this is an amazing explanation how to properly draw the golden colour scheme on a bikini. Unfortunately, I can't read any of it. Especially since I'm not good with handwritten Kanji.
Decided to fill in with the translation work. Good Lord, this person's handwriting is worse than mine.
Using a dodge (glow) layer, create highlights with a soft pen or airbrush.From reference the surrounding area appears to have highlights, so enclose it as well.It may seem like a no-brainer, but that's how it is.Gold Bikini
Personal NotesBy looking at references, the colors seem to line up like this.Highlights and shadows are adjacent.On top of the base color,
add a darker color.
Use a median color for the reflection.