There's a way of seeing that artists use that normal people don't use. People call it "learning to see" or "right brain thinking". Discussion about this is often vague or mystical -- but there is nothing magic about it, it's just a limited set of skills that lots of people pick up (and teach) intuitively, nothing more. These skills are:
1. Recognising whether something is an edge.
2. Judging angle.
3. Judging size.
4. Judging placement.
5. Judging proportion.
6. Judging value.
I'm pretty sure that's all there is to it (for pencil drawing). Okay, so what do these mean, and more importantly, how do you learn these skills?
What: A boundary between shapes. Edges can be hard or soft (soft edges are harder to see). An edge is where you might draw a line if you're doing a line drawing.
How: Most people have a 'good enough' intuition about the location of edges, but it's easier when you know what to look for expli