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