我猜，如果你在画的是跟上课有关的信息的图画，那更加能够加强你的集中力。

I'd guess that if you were actually drawing out information related to the class, that might improve your concentration even more.

youdao

但是关于告诉你如何处理面部特征，我猜你会找老的“使用中心线画鸡蛋”之类。

But as for telling you how to do facial features and such, I guess you're looking for the old 'draw an egg with a center line' thing.

youdao

但是关于告诉你如何处理面部特征，我猜你会找老的“使用中心线画鸡蛋”之类。

But as for telling you how to do facial features and such, I guess you're looking for the old 'draw an egg with a center line' thing.

youdao