Manupix, thanks for the links!  This work was made just for fun and for AA practice, but how I can see it looks not so good ;[

I didn't know about the neck, but here its not a big brolem, right? xD

Colorful AA deserves a saturation boost. Study Panda's work. Also relevant, item #1 here.

Also, you have a whole week to improve on this ;)

fyi, Its added to the challenge and does meet the challenge but know that a portrait implies the neck as least but usually you see some shoulder area too.