Blue Glass Bottle #3

I had to spend some time unclogging my Koh-i-noor .13mm Rapidograph pen today. :(  I thought i had run out of ink, but that wasn't the case...i think maybe it was a fiber from the paper that caused the problem.  Anyway...i was able to put the finishing touches on, and now i just have to add color to make it a 'blue glass' bottle.  I've been experimenting with different inks and pigment inks...

Hopefully i will have it done tomorrow.

Details...
About 4.5" square
Stippling done with a Kohinoor .13mm and .18mm pen
Surface is fairly smooth watercolor paper