The problem is that you need to change the size/format of your UV map. Go to edit mode in the viewport and then you will see the UV map in the UV/image editor:

Then select one or all of the vertices in the UV/image editor and move/scale.

The problem is that you need to change the size/format of your UV map. Go to edit mode in the viewport and then you will see the UV map in the UV/image editor: EDIT: in order to see the uv map, you need to select the vertices in the viewport while in edit mode or select this option: Then select one or all of the vertices in the UV/image editor and move/scale.