You can see the feet on the bowls are made by two half-moon, measured slab pieces similar to the feet on the small plates in the set. They were affixed when the bowls were leather hard, in the usual manner of scoring and slipping.
I drew tulip designs on each bowl's exterior. I think the interiors will be the solid speckled turquoise glaze that I used for the background on the plates (so they will also connect with the backgrounds on the bowl exteriors). The speckled turquoise glaze has a bit of a rough texture, though, so I will also do a top coat of clear glaze to hopefully smooth it out.
A glaze firing was going to be put on, so I shelved these bowls, knowing that the glaze-painting of the designs would take a bit more time than I had. I quickly glazed a smaller, simpler bowl so it would go in that firing.
This turned out to be a good plan! Using only two glazes - fire engine red for the interior and rose gold for the exterior - my small terracotta bowl turned out quite lovely. I call it Libation Bowl. Though I am sure this is suitable for blood sacrifices, it will probably get most use as a peanut bowl.