|Greetings from the Critique Club!
Lovely scenery, the light playing over the shot in the valleys is great and gives a nice leading line to follow.
Uh-oh I think you know what I'm going to say...those big ligfht coloured clouds with blown-out whites topping them (in the right half of the image) just don't help this image at all in convincing us that there is a storm in the offing. Over here, the clouds build and build, the sky turns the colour of lead, and the clouds are (or look) so low like you could reach up and touch them. Here, although I do see menacing dark clouds, some rain shadow from rain actually falling or, if you're really lucky, a fortuitous lightning strike would really wake the photo up!
Anyway, a very good attempt and keep in mind that weather and wildlife are by far the most difficult to give direction to, cause they just never listen, do they? :-)
Please keep shooting and entering!