Here is the process of how I hand draw my illustrations. Today's is Scary Terry from Rick and Morty using Pigma Brush Pens and Copic Markers.
Timelapse of line art, grey tones, and color pass:
Here is what I came up with on the ipad pro using sketchbook pro:

Here is the inked version:

And finally, here is the color final:

Thanks for stopping by. If you have any questions, comments, or requests please leave them below.
-Steve