If it's glued on you can carefully melt the glue with a hairdryer. If it's stuck on some other way you just have to very carefully pull it off I guess. Either way, there is a chance it'll grow funky in the spot just from the fake flower being there.
Okay thank you I just didnt know if it would hurt my plant by keeping it on and if I tried to get it off what would be the best way, Thank you this was very helpful!!