what i learned so far in art class

what i learned in art class so far is shading,counter line ,and art element form .

first i'm going to talk about is shade.there are differnt kinds of shade like regular shade ,cross hatching ,stippling ,and hatching.next is couter line counter line is easy all it is lines that are design.now there is form elements like shade ,value ,color .

How to Shade a Drawing
Pencil Drawing Techniques - How To Shade And Blend