If possible, turn off the electricity supply at the mains and loosen the cover of the rose. Use a knife to slit the paper around the rose, allowing the paper to just fit under the cover when it is replaced.
Brush any bubble toward the cut out section. Wipe away any excess paste before replacing the cover, while pressing the edges smoothly underneath.
If the cover cannot be loosened, slit the paper fit as close to the cover as possible. Take care not to push the blade of the knife into the cover.