A wallpaper sized photo can be downloaded hurrr:  

That's pretty cool. Is that you?

Yeah it's me. I mailed the painting to Valve, I wonder what they ever did with it?

That's pretty cool. How long did it take you?

wow that's pretty good.

Awesome job! And good call on not using the new end song.

The dark line-art on the gun kills it a little. Would've worked a little better if he ditched the line art for a more pastel-looking portal gun. Good nonetheless.