Bar/Restaurant Sign

hi! Welcome to the forums .If you're talking about the decal signs that slot over the boards then those are plain square meshes with a sign texture.

You need to clone the item you want using the "create 3d mesh" option. Export the diffuse texture and edit it. As well as the grey-ish texture that matches the EA sign. Both in your image editor of choice, example: photoshop.

If you'd like to change the shape of the mesh, or make it longer or wider, you can look at this tutorial. To change both shape, and UV map.