When you're stuck staring at a blank canvas, scribble random lines fast. Your brain will find shapes in the mess, like a George Washington profile. Chasing perfection kills creativity; letting lines flow naturally beats planning.
If you're ever staring at a blank canvas in Procreate and you don't know what to draw, start drawing lines like crazy. Don't worry about what you're drawing. Just like looking at clouds and seeing animals, faces and shapes and characters will start to pop into this. Clearly we're seeing some form of George Washington is in this drawing, and if you don't see it, it's just perfectly clear that it's right here. Where is my mind? This is gonna help you get over your procrastination and start to create characters that you normally wouldn't draw. Stop trying to make the perfect drawing and you'll just draw what flows out naturally.