It depends on the look you’re going for.To mimic ceramic tiles: Go for gloss. This will give your stickers a bright, enamel-like sheen, just like real ceramic tiles. Gloss finish also creates bright, vibrant colors. When using gloss stickers, be sure that the surface you intend to cover is perfectly smooth. Gloss wallpaper is more likely to show any irregularities beneath.To mimic cement tiles: Make it matte. If you love the look of cement tiles or have chosen a design with a weathered, aged, hand-painted effect, matte finish is your best bet. Matte finish renders colors softer and subdued. It’s also slightly more forgiving, making it the best choice for surfaces with slight texture.