Though Photoshop remains the most recognizable image editing application out there, open-source alternative GIMP is still around, still free, and still receiving updates. In this video tutorial, photographer Shane Milton spends around 25 minutes demonstrating how to use the software to apply a pro-level beauty edit to an agency’s model image.
If you want to go fully open source for your photo editing, Milton is a great resource. His YouTube library offers numerous other videos on GIMP and free Lightroom alternative Darktable. In this particular video, Milton uses a Wacom Intuos Pro Small tablet with GIMP 2.9 running on Linux. He previously demonstrated optimizations that users could make to this version of GIMP, as well as setting up the Wacom tablet for use with Linux.
GIMP can be downloaded at this link for Windows, macOS, Linux, BSD, and Solaris.
Articles: Digital Photography Review (dpreview.com)