My work can also be seen on these sites:
http://www.science-art.com portfolio site for the Guild of Natural Science Illustrators
http://www.asba-art.org website for the American Society of Botanical Artists
Other sites of interest include…
http://www.gnsi.org website for the Guild of Natural Science Illustrators
www.pnba-artists.com website for the Pacific Northwest Botanical Artists (PNBA) the local chapter of the ASBA
Craftsy.com for my class and many other art classes, including botanical!
For lots of information on watercolor paper, paints, etc., check out handprint.com; lots of research has gone into this one, it looks like!