well i am the one who noticed that anime is drawn traditionally.....
so yeah ..as an observer....i am an anime expert
and i say its not a big deal....cuz almost every single anime has some weird shadows that are just there to look cool and they dont make sense.
[link]his hidden arm has light bouncing from the right....but it looks directional...
and with light coming from the left ....this doesn't make sense,..yet it looks cool
and the pose of your oc.....is almost the same with the hidden arm.
a professional drew this ichigo.....and the light is wrong yet it looks cool.