color mixing

• 2 colors: http://painting.about.com/od/paintingforbeginners/ig/Art-Worksheets/Art-Worksheet-Color-Mixing.htm
• 1 side color chart, prepare wet colors in a palette: http://terrykrysakartworks.blogspot.com/2008/12/watercolor-tip-make-your-own-color.html
• drop color on wet, side by side, let it mix: http://paintwatercolorcreate.blogspot.com/2012/12/color-mixing-with-watercolors.html

art worksheets:

• (sphere!) http://painting.about.com/od/paintingforbeginners/ig/Art-Worksheets/Art-Worksheet--Sphere-1.htm
• (color theory) http://painting.about.com/od/colourtheory/ss/color_theory.htm

Tutorials

• * http://www.yaochengdesign.com/blog/ (LOVE) (the Alisonshow, tutorials!)
• http://www.pinterest.com/melissapher/watercolor-inspiration-and-resources/

Watercolor:

• http://www.inkstruck.com/floral-watercolor-border/
• http://www.inkstruck.com/how-to-paint-watercolor-trees-part-1/