If you were a little confused before clicking the link to this page, allow me to clear up your confusion. I used a Samsung Galaxy Note device to draw these. All Note devices come with a digital stylus, which allows the user to control the device with more precision. So I used that with an app called ArtFlow to draw these. Naturally, because mobile devices have much less RAM than PCs do, I was limited to a max image size of 4096×4096. Not all the Images are from ArtFlow though. I also made a few sketches in the SNote app. Those images are of even smaller resolution.