Enlarging

Having drawn a simple picture with a 1cm square grid drawn over the top I then proceeded drawing a rectangle with a increasing the squares to 2cm. Copying the picture square by square was exacting and time consuming but I felt that it was worth it.  It was only a simple drawing I attempted but I felt it worked and while I was drawing the enlarged version it struck me that if I had wanted to double the size of the picture purely by eye it would have ended up considerably smaller!