As usual , I chose a reference picture , googled "glass of water" , original picture : images.wisegeek.com/glass-of-d…
I didn't concentrate on proportions , was trying to draw something new to me - water /glass - , right side of glass is a bit deviated .
I still didn't go out for shopping , so I had to use a normal pencil , and I had to apply "auto-contrast" in Photoshop .
Cleaner version with a fine black border uploaded 20/9/2013.
*Cleaned by Photoshop CS6.
5 hours approx.
tried to use Q-tips this time
Hope you like it .