I'm agree. Thanks for the comments. I've updated with a better version. Thanks, thanks & thanks.
Because you say this is AA practice and we want you going in the right direction...
There is nothing AAd on this pixel cept maybe a bit around the lips.
The lower edge of the nose could be considered selout more than AA :/
You have the right colors for AA (includes the blues in mouth) and the contrast is good.
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The Mandelbrot had much more successful AAing.
There you go. Now its AAd