Zakkiya, the talented illustrator behind Inkstruck Studio, recently released to the world a watercolor cactus tutorial that can make even a beginner look like a pro. If you feel her creation is a bit of a reach for your abilities, not to worry. Zakkiya has an entire series devoted to watercolor for beginners. (Click here for the lineup of those tutorials.) As for these delightful cacti, you can find that lesson by visiting this page on Inkstruck Studio.
Watercolor Cactus Painting Tutorial [Inkstruck Studio]