The technique of working with watercolors and a gel pen is that first, on paper, you create a drawing with a pen, and then paint it as in painting with watercolors. The main feature is that the pen is not a simple pencil that can be easily erased with an eraser. Therefore, when starting to work on a drawing, you should already understand what you are drawing and how you will draw. There will be no second chance to correct the drawing with a gel pen