Learning to Draw With Photoshop

Yesterday I found some tutorials on Youtube on drawing with Photoshop. I've had the program a long time and don't really know how to use it. So I got inspired by the tutorials and my goal was to draw and learn to use as many features as possible. The end result kind of makes me cringe, but at least I did it.  It's very time consuming. I stayed up till midnight working on it and then put another hour into the same drawing today. I'm tempted to go back in and try to make improvements, but I saved it as a jpg so I'm not sure I can. So here it is: