plane a and displace modifier - unexpected results

Ive created a plane. ive subdivided the plane and added a displace modifier . When i add the empty to th scene.

Select the plane then go to displace- modifier tab . The clouds image whch iveused to displace the mesh . The n seems to be tiling . I want to animate the clouds with the empty . The clouds seems to increase in size when selct the empty in the modifier tab . i have attached the image below. If that doesnt make sense i post a vidoeof the problem which occurs.

The method i ma trying can be located here yo frakine water tutorial.


the following is form a tutorial . I am trying to complete

The size of your ‘empty’ causing that.

Yeah. scale the empty.