Wow....just wow. The simplicity of it is amazing in itself but just to be able to keep something so simple but so interesting is hard to do. The paint actually looks like it is in some sort of container, I love that idea, the paint lines themselves seem to overlap in a natural way making the piece look not very sloppy but well put together. I can't stop staring at it. 9/10
I'm not entirely sure what you're going for here. It looks like a combination between the uses of the pen, gradient, and selection tool. Cool, I guess.
Actually, if you implement this idea on some textures, it would actually look good.
I liked the way you gave it the cylinder look without drawing a full cylinder.
Love it.
Simple things are often the best.
Complicate it too much and it ruins it.
10/10, beautiful man.