> 畫的是TRANSFORMERS ANIMATED的Sari Sumdac(莎莉 辛達),
Nope as I didn't watch the series yet.
> 因為看過日版的飛天小女警之後所以嘗試日式化一下,
Good attempt but beware of the light sources.
As it's the spark key being the dominant light source,
So there should be less chances to see a big dark shadow under chin...
rather there should be some shadows on the cheek areas close the eyes
and a lot more shades on the back of the hairs...
Basically you need a high contrast of shades to emphasize the shining key.
I saw the 3D frameworks on your spark key... you could have reduced a lot
of unnecessary polygons. If you use textures, it will further save you more.
Keep going.