Homestuck Palette Challenge

Over at Tumblr, I'm doing a challenge where characters and  palettes were suggested.  I'm mostly requesting Homestuck characters.  I decided to draw them in this circle style so I can do various characters in a somewhat consistent way.
This will be updated with every row I complete over at Tumblr.

First row: Cronus Ampora, Porrim Maryam, Aradia Medigo, Meenah Peixes
Second row: Roxy Lalonde, Karkat Vantas, Rose Lalonde, Kankri Vantas
Third row: Kanaya Maryam, Eridan Ampora, Feferi Peixes, Gamzee Makara
Fourth row:Meulin Leijon, Equius Zahhak, Nepeta Leijon, Horuss Zahhak
Fifth row: Dave Strider, Mituna Captor, Dirk Strider, Sollux Captor
Sixth row: Nepeta Leijon, Kankri Vantas, Damara Medigo, Horuss Zahhak
Seventh Row: Aranea Serket, Latula Pyrope, Vriska Serket, Terezi Pyrope