I'm having issues... Did you have a plateau when you were learning to draw faces when it came to making them have depth and volume? How did you overcome this? Studying shading?
Beginner thread. Question thread.
You're still symbol drawing like shit, but yes understanding value will help make something have depth. A lot of the shadows you have are slapped on and look pretty arbitrary.
You still look like you need Loomis or any sort of construction instructor.