[Draenin]

Easy. Take a look at this please. In the first spot, I have how you shaded the crate before. You shaded it in diagonal strips. In the second spot, I have how I would shade it, moving all the shadows into spots they would belong. In the third spot, I added in detailing to shift the focus off of the object's normal shading in order for the object's shading to become a less apparent, more discrete feature.