If you leave the outside white it comes in at the same height as the whitest part of the design
You can cut it by itself, yes. I assume you just mean on a flat surface. You still need to create geometry to define the rest of the workpiece.
Here it is modeled into the bowl you describe. 8" outside dia. 7" bowl shape. Fleur de lis adjusted to fit.
I created the outside shape as a flat 1" component selecting the outside circle.
Then create the inside bowl shape by subtracting a 0.6" scaled height round component.
Then added the image at 0.1 high, and adjusted the scale factor until it looked nice
