Hog Rider from Supercell games drawn with Ipad pro + Apple pencil + Procreate software.
I usually don't post sketching process as it is not very different than learning traditional drawing, no secret tips, just a lot of practice.
If you want to improve your drawing you can start from those 6 basic exercises: https://www.sosfactory.com/drawing-le...
Once you master traditional drawing, transition to digital drawing is not that hard, you can start here: https://www.sosfactory.com/product/ph...
And then you can apply color: https://www.sosfactory.com/product/ph...
Enjoy!
Sergio