Handmade greeting cards are such a thoughtful way to send a little love. In this step-by-step tutorial, I’ll show you how to create simple, hand-drawn card designs using a brush pen and watercolor.

In over 700 pages of handwritten Dutch, the author, who identifies himself as A. Boogert, describes how to make watercolour paints. He explains how to mix the colours and how to change their tone by ...