.
.
It
doesn't matter where you start. Don't think about what the drawing
represents. Try and only see the lines with a certain inclination
and only copy the lines, without thinking about the bigger picture.
.
.
It is very easy to follow the parts that are
next to where you hav started, comparing and relating somo lines with
others, the angles theh link some with others, this is longer or
shorter than the line I have just draw, etc.
.