>>1016912
You are correct. This bouncy effect is the best one, follow is better than parenting, but it still looks inorganic. It needs a little bit of "over compenation" to look natural.
>>1016916
The reason is because a "halo" isn't supposed to be a glowing circle. It's the appearance of a bright light shining behind someone's head. Pre-renaissance medieval art got very "symbolic". You can say it was because christianity stifled artistic developement. you can also say that the meaning of the art became more important than the "technical correctness" of it. Either way we get the idea of the physical halo from these symbolic representations of a real thing you can see.