This tutorial is from 2013but I thought I'll share it anyways as it still may be helpful for some of you. And besides, the other tutorial I have in my DeviantArt gallery - is even older!
The original post is located here - link
I after I got one message about my “smooth” shading method with using default settings only, I decided to make another tutorial thingy. So I paintined something quick with the round brush. The last tutorial was done 2 years ago; generally I treat my videos as a tutorials because you can see the process and all tool settings at one time, you can pause the video and see the parts which you are interested the most. I use GIMP 2.6.7 with GPS downloaded, Wacom Bamboo Fun tablet. And mouse.
This is a painting tutorial, not a drawing tutorial. It doesn’t show the one and only way to create art. It only shows one way I like to use often. And even if I often use the default round brush and settings, that doesn’t mean I don’t use other brushes or settings. Whenever I need to, I use texture brushes and layer adjustments. Also, please keep in mind that I’m not native English speaker: there may be errors.
What isn’t shown here is that I do a lot of flips and I paint details on zoomed in picture. Those who watch my YouTube videos may notice that I tend to flip my paintings left, right, paint upside down etc.
In the first picture I translated names for some more important tools/settings, so you shouldn’t be confused. I hope the translation is accurate. I may upload this thing on my DeviantArt.
If you have questions, please refer to my FAQ please.