Looking at the results, my first thought is that the colors are interesting, maybe even engaging (that's quite a stretch), but they are going to be too overpowering and busy when used to plate desserts. The food risks being lost on the surface.
Maybe switch to a subtle play of white on white. For the next round of tests.
They are a little heavy. Thinning them out a little, but still leaving the thickness at the rim.
The foot is nice, but needs to be lightened and possibly standardized with a cut profile rib.
It didn't help that the finished fired works had shrunk down as much as the did. It would probably be wise to do the math next time to arrive at a proper size.
The rims pulled in and added an extra degree of concave to the finished forms.
Lighten up on slip application.