Cross-contour is a mixture of cross-hatching and contour, as the strains are curved and cross each other, Therefore supplying the sketch a denser contouring. This ink technique is generally accustomed to carry out shapes in a far more notable way. Some pens used for pen and ink drawing techniques https://inkdrawingforbeginners66666.eedblog.com/36750157/detailed-notes-on-how-to-draw-with-ink-pens