Study shows red pen use by instructors leads to more negative response
Project 1: Exercise 1: Experimenting with Expressive Lines and Marks – Rachael's OCA Blog: Drawing One
Replying to @jacobalvarez30 Here's the best place to buy Posca pens.
Grading in Red Ink a Bad Thing?, Center for Teaching
T-shirt drawing: T shirt painting ideas & T shirt painting tutorials
Shuttle Art 280 Colors Dual Tip Alcohol Based Art Markers, 279 Colors Permanent Marker Plus Colorless Blender, Micro-Tip Pens, White Highlighter
How do you shade with pens? also I welcome criticism! : r/drawing
Are Copic Markers Lightfast? The Inconvenient Truth about Art Markers — Marker Novice
Judging Your Own Art - RozWoundUp
Drawing, But The Red Marker is HUGE! Very Satisfying! (#Shorts)