Gel Pens: Gel pens use water-centered gel ink that flows freely and easily, creating lively, opaque colors. These are ideal for adding Daring strains and accents in your work. Architectural Drawings: Use these techniques to differentiate components and surfaces in architectural drawings, such as the brickwork of the developing https://franciscopstts.bloguerosa.com/36185491/how-to-draw-with-ink-pens-fundamentals-explained