I haven’t used them but probably wouldn’t risk it in case they damage the paintwork.

Sorry can’t advice, following.

This one was my eldest’s room.

You have to be careful with the cheap ones as they are like stickers and may peel off paint when removing them. They are a great way to decorate a kids room though. This one was my youngest’s room. The tree one did peel paint off but the walls and paint were really old. The ones on the left over cot were ones that were static and stuck to the wall. Much easier to remove

We bought them online years ago, but sorry do not remember where? We saved $$$

Decals are easy to use and look good too.