I have been adding more layers of hay after feeding to help cover it up, and to make sure there is enough "brown" matter to balance all of the fresh "green" matter I add to the bin. I also make sure to keep the bin moist. So far no liquid has drained out of the bottom of the bin, so I hope the bin is moist enough and that the drainage holes are not blocked. Sometime soon I am thinking of giving the bin a good mix to help aerate and to check the drainage holes to make sure they're not blocked up. The bin is not smelly at all, as all food matter added is buried under the layers of newspaper, hay, and soil. It has a pleasant earthy smell. There's some beauty to the bin:
I have noticed some tiny red spiders crawling all over my worm bin, both inside and out, walking all over the lid. They appeared about 1-2 weeks after I started the bin. My initial thoughts were that they must be involved in the decomposition process in some way, just like the worms are. Even when I had to have my worm bin indoors due to cool weather, these mites did not leave vicinity of the bin indicating to me they were attracted to the contents of it.
This is a photo of one of the Tetranychus urticae inhabiting my wormery.