This drawing was made while looking out the window at my parents’ cabin in Northern Arizona, using Autodesk SketchbookPro for the iPad. It’s a fun program to use; they just need to make it easier to save files while you’re working on them. I’ve had a couple of times (including on this drawing) where the drawing was almost finished, then somehow I got out of SketchbookPro and all the latest work was never saved. I also have an annoying habit of getting into the section where you can rotate or move the drawing, then it ends up getting saved that way. Cool program, needs some fine tuning.