Hello, I need help creating images for my lobby

Does anyone know how to create lobby images like the following?

I really want to create something like that but I just don’t know how to. So I’m just wondering if anyone can help me?

Unfortunately, you can’t put your own media into gimkit creative yet.

Oh, ok. I didn’t realize that, hopefully they can update it.

Yes, according to NavyCat, you can’t do it. You can use the instructions by using the text device though!