If you like using colored pencils and watercolors to portray flowers and plants, this book has many techniques that may be useful to you. Some of the techniques covered include: adding color to form, focus on leaves, perspective and measuring, overlaps, bite-size botanical compositions, and more. I’ve practiced drawing leaves and find the exercises helpful and easy to follow.
The Joy of Botanical Drawing: A Step-by-Step Guide to Drawing and Painting Flowers, Leaves, Fruit, and More. An inspiring and easy-t-follow guide that covers everything you need to draw in the natural world.