Expression study

Good Job . To improve you can do several things :

1) Try to think of the head as a 3 dimensional shape . I see you start to do this but maybe take a step further to define the overall volume.

2) Analyze the shape of the skull to understand the structure underneath the facial features, this helps understand the anatomy and also helps rendering the head from various angles because it the relation between the shapes is better understood .

3) Apply slight shade to the figure to note light direction: this would help start rendering beyond just lines.

4) Asaro head lighting tool , to understand the planes of the face in response to light and shadow.

These things take practice to master , I myself still practice , keep at it..

Excellent work and effort on your drawing of those faces, flatlinessss. Most of them seem pretty recognizable, except for that rotated girl at the top. Not getting enough of the funny drawing in the gesture and flow on your expressions. Would you like to go for the online drawing tutorial here in Line of Action. Look, I know it's always figures, but if you wanna see some faces and expressions in that tutorial, just feel free to ask Kim or Sanne.

As a result, your forms and details will become a lot more solid, fluider and liveliest in the cartooniness and expressiveness in the facial drawings. My hat's off to you and have fun.