I love colored glass. You can find all range of tones on one single vase. This is why this kind of glass is a favorite subject for many artists.
Here is a display of several vases. I chose only three of
them to draw. You can use this photograph as reference to make your own drawing and let me know how it went. Click on it to enlarge.
The most difficult part was my contour drawing. I used top
part of the tallest vase as my measuring unit. I measured it with my pencil and a thumb and then set down the right proportions between height and width of all my
vases. Lines of symmetry were helpful too. From these lines I drew
the vertical lines. On those lines I checked if my outer lines are equally away
from the center.
To control the curved lines I kept turning my sketchbook upside
down quite often. At the end I glanced at the drawing in the mirror to make a few additional
corrections and then proceeded to the pleasant part – shading.
For shading I used regular 2B mechanical pencil. Highlights
were done with an eraser.
I completed the drawing within about an hour.
To sum up:
A good drawing comes from a good subject.
So hunt for it!