https://www.skillshare.com/classes/Sketchbook-Practice-Make-Everyday-Objects-Pop-With-Watercolor-and-Pen/1234335046?via=search-layout-grid

This class will take you through a really simple technique using watercolour and pen to create highly decorative sketches. This is a beginners level up, as you will look at inspiration for basic shapes and silhouettes that will provide the basis for the pen line. Furthermore from the inspiration session you will pick out details that appeal to you that can then be added in pen to your sketch. The choice is yours how you interpret the details, adding as much or as little as you prefer. You could use just white gel pen, or a variety of colours, its up to you. Once you have learnt this basic technique you can apply it to any manner of subject matter.