GIMP: Creating Shadows and Highlights for Cartoon | Photoshop Alternative | #45 - YouTube
Improve shadows and highlights - GIMP Video Tutorial | LinkedIn Learning, formerly Lynda.com
Artists' Toolbox: Shading and Highlighting in GIMP by Missvirginia on DeviantArt
How to Add Shadows to Text in GIMP
How to edit a photo in GIMP - Quora
GIMP Chat • help in Shadows Highlights and Contrast
GIMP Chat • Perspective Shadow
GIMP on Twitter: "New in development version: now that Gaussian blur is almost 33% faster in GEGL, we moved the Shadows-Highlights filter (which uses blur) from experimental to stable and exposed it
GIMP 2.10 Shadows-Highlights Feature (Text Version) | Davies Media Design
2. A step-by-step example showing how to recover shadow information using high bit depth GIMP's floating point “Colors/Exposure”