User blog comment:OZCAR LIAMZ/Fanmade Characters Part 7/@comment-35762651-20180610025946/@comment-28901366-20180610232639

There are plenty of programs you can do it with for free, most notably GIMP, which has many of the same features Photoshop does, but with a different layout.

On YouTube there are some JD character tutorials you can follow that are mainly done in Photoshop, but some programs (like the aforementioned GIMP) that work similarly to Photoshop.