Once again, this part of the costume is also included on my Indigo-1 WIP on the League of Lantern yuku forum.
The head piece was made from a latex bald cap used as a core. I mixed acrylic paints together to match my liquid foundation make-up as best as I could (suggest Liquitex soft body). I used a black eye liner to draw the guide line for the first cornrow, starting at the crown of the head. As for the cornrows themselves, you can buy crepe wool hair but for this application it's cheaper to just buy black wool yarn. I bought mine at Hobby Lobby for $4 and only used half of the bundle. The real trick is to measure out the over all length you want the hair to be, add around 25% to 50% more and then double it. Braiding will, of course, make the the length retract a bit. Remove the thread guides that are spun into the yarn and gently spread the center of the length. For attachment I used a flesh tone liquid latex that comes with a brush applicator connected to the inside lid. Brush the latex onto the eye liner guide covering around 1" to 1.5", lay the center of the yarn onto the latex and carefully brush another coat on top. Carefully divide each side into three parts, it's easier than it appears. Repeat the entire process around 4-5 times down the guide line. For the pointed front I just used a non doubled length of yarn, pulled slightly at the tip and rubbed it between my fingers to give it a quick, mock felting. I then trimmed the tip, glued it in front of the line and gently divided it into three sections. As you work down the sides of the head, it's best to subtract the number of lines, I did this every other row. As for the symbol, I drew and cut out the shapes on thin vinyl, painted them to match the indigo blue and super glued the pieces into the bald cap.