You don't really need to do anything except press the green flag button in the middle to get rid of it. The green flag really does nothing since this is just a picture.
I dropped it on the concrete while getting off the bus for school. Everything on it still works, so... oh well. I'll just keep using it until I've saved up enough money for a new one. In case you didn't know, my phone is a Samsung Galaxy A16 I got from Walmart with my own cash back in January. Likes and favorites won't be taken offensively.