Gel Pens: Gel pens use h2o-based gel ink that flows freely and smoothly, generating vibrant, opaque colours. These are perfect for including bold lines and accents towards your work. Architectural Drawings: Use these techniques to differentiate products and surfaces in architectural drawings, such as the brickwork of a setting https://inkdrawingforbeginners15326.blogsvila.com/37295203/the-basic-principles-of-ink-pen-drawing-techniques