To keep your decal clean, periodically wipe it down with a damp cloth. If you need to store it, you can do so for up to one year.
If you still have the original backing, put the decal on it before storing it. Store at room temperature in an area where the humidity is 50% or less. Don’t lay heavy objects on it or roll it too tightly. That’s because wall decals can rip if there’s too much tension.
Also, by not rolling it too tightly, you’ll avoid unsightly creases.