Will I ever be able to use a backdrop for my betta's tank?

[A Betta World Rules]

He fights himself, and even has ripped his tail four time because of his reflection. So now he has a closed window (blinds down) behind his tank, which is unattractive, but I don't have a better place to put the tank.

I got a bunch of thick silk plants with wide leaves. If I use plenty, is there still a chance of using a backdrop?