Once you have copy and pasted your map into the .psd you need to scale the map to fit into the grid.

How to scale varies from program to program, so if you are having trouble scaling an image please use their help information. I have included pictures of what scaling looks like for Corel Photo Paint.

1. Select the layer that your map is on

2. Open the scaling tool and look for X and Y Measurements.

3. The original dimensions of your map should be X:54.187 and Y:30.48

4. Change these numbers to X:61.299 and Y:34.248

5. Apply the scaling to your map image.