This is a photo of the top tray in my wormery. I also put in brown paper bags that work best ripped up.
I add shredded paper to aerate the heavier food matter. Dried grass cuttings or dried wood chip also works. (I have a small wood chipper)
Here is the third tray full of worms and compost.
Here is the 4th tray with compost but fewer worms who have moved upwards.
When you empty the lower layers do look out for the worm nursery which includes egg sacs. If there are worms in there you empty the compost out onto a waterproof sheet and put a cover over one part and the worms will migrate to the dark area. It can take a bit of time but is quite satisfying.
Lastly a photo of the liquid fertiliser that feeds my plants: I will dilute this and feed the plants in my garden that look like they need a boost.