Spot gloss
Spot gloss works particularly well when applied on top of a matt celloglaze because the contrast between the matt base and the gloss embellishment is most exaggerated.
The advantage of Spot UV gloss is that it sits completely flat on the surface (no noticeable thickness to it) and can extend to the edge of the cut sheet.
Ideally, the Spot gloss highlights some of the larger elements in your design or is applied as a pattern or element in its own right.