Having some kind of sturdy tacky cutting mat you can attach this type of vinyl (with it’s backing still on) to in order to keep it from curling or shifting while the blade does it’s work would likely be a good idea (and adds a third level between the blade and plate). Which means then when you cut the piece you want to cut from it still curls. But most “fancy” vinyl (glitter, “holographic” air quotes because it’s more irridescent than holographic, chalkboard, whiteboard etc) it often comes in rolls. If you get Oracle or printable vinyl which generally sells in flat sheets, great.

As long as your depth is set right you should only be cutting the vinyl and not the backing - so the plate shouldn’t get touched unless your depth is off. The blade likely won’t be particularly long and vinyl comes with two layers, the vinyl which is sticky and the backing which is not. Don’t have my flux Delta+ yet so take this with a grain of salt, but I do have a vinyl cutter (well more like a anything that’s reasonably flat cutter… It’s a cricut).

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