>>1649503First of all, always save all your images as png, it's lossless and has better compression.
You should check to see if you have anti aliasing checked for your whole image, it looks like you only enabled it for her hair.
The red circles are things you missed. The fingers look weird but once they're anti aliased they should be much easier to do. The end of the scarf is simple enough to do as well. You missed part of her ribbon in her hair along with a few other minor errors.
The yellow circles are my recommendations. The posterization doesn't have to be an exact copy of the original, you can simplify some parts that would look bad in the final product. I see you already chose to exclude Saber's extra hair.
For
>>1650144 there was supposed to be a little indent at the bottom of her sweater for a zipper, but I made it smooth because it looked much better that way. Don't be afraid to do some experimenting and deviate from the original.
I would make her skirt in the left corner all dark purple and extend her leg into the dark purple part on the right. Finally, I would try to extend the hair that her eye would normally cover and see what it looks like completed.
