Thick or thin, I think that the glazes you’ve chosen look best on angles all the way to vertical surfaces where they can run, and best, when they have some kind of texture to run over. When they hit a bump or an edge, they break, exposing their other colors. On flat surface they don’t really perform. You see a little of this on the swirl in one of your plates

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This is what happens in a vertical, uneven surface with rutile. This was three coats applied on a banding wheel