Glass texture

I want to reuse the watercolor paper that I have from the expressive watercolor workshop. I am cheap, I know... I also have a jar of absorbent ground I bought way back for a reason long forgotten. I might try to use the paper with pan pastels - another impulse purchase whose reason is long gone. In the meantime, I used it with pencil.

By the time I finished the watercolor sketch, the light changed and I am "stuck" now with the wholes in the middle of the glass instead of the background shapes. Oh well...