As a personal choice, I adopted massively opensource software since Windows Vista appearance (even before, eh
), and when I need some graphic work, I love to use inkscape, or gimp. Quite interesting programs, stable and mostly reliable. A typical example of what you may achieve with collaboration.
I'm not an artist, but you don't need to be an artist to perceive what is behind, the commitment (and satisfaction) in your drawings, Derula, or those of Jilata, where i perceived feelings and moods so clearly.
The technique will grow with the program knowledge, but I like the posture first of all, so again bravo.