Originally Posted by
Geoff F
... if you want them to look bigger you need to get closer, or crop tighter.
Possibly find an angle where you can concentrate on one or two in the foreground but let the others gradually fade into the mist, and become' smaller' with distance. Including some houses certainly gives a good sense of scale.
And the suggestion of them 'marching' across the landscape is something to consider. Also, cropping to a different size ratio such as 5 x 4 or even 4 x 5 can appear to increase height.