Solid drawing

solid drawing being able to draw your character from every angle in a believable manner so that they look alive. as you can see from this image from 'the illusion of life' the image looks more realistic when you take into account the angle you are looking at your character from and make sure the perspective is right with the correct amount of fore shortening.

as you can see from this  image i took from http://johnkstuff.blogspot.com  solid drawing is also about making the pose your character is in look plausible and having the characters clothes and flesh rest in the right place for example the creases in this rabbits jumper verify that he is 3D.