I used Cray-pas Specialists, Terri. I did a little GIMPcraft on the lousy pic, so it's possible that I inadvertently saturated those greens a bit. (The pic was washed-out, so I duplicated the single layer and drained most of the density from the new layer before I merged them.)
It's roughly 10"x10,"Artyczar. Strathmore used to make that wonderfully odd Aquarius II paper in a big wirebound notebook-type format, in which I drew/painted the VW from a photo. (one of these days, I'll make a smaller book of that paper from sheets. Gotta learn a little binding for that, though.)