Colorado Landscapes

This was my first visit to Colorado, and my first try at some panorama shots.
Please feel free to offer any critique on compositions, etc.
I have not used any filters, and have done very little post-processing on these images.
Thanks to everyone who helped me with the route.
Thanks!

Cottonwood Pass

http://img87.imageshack.us/img87/2959/cottonwoodpasss.jpg

Ohio Pass

http://img163.imageshack.us/img163/4053/ohiopasss.jpg

Twin Lakes

http://img89.imageshack.us/img89/6964/twinlakess.jpg

The first thing I'd say is that the midday light is doing you no favors here. This time of year the landscape looks kind of dried up, more so this year with our lack of moisture, so these look pretty harsh on the lighting and just plain brown.
Cottonwood Pass: Too much sky and I wish that entire loop of road was in the frame.
Ohio Pass: Way over-sharpened. I'd also like to see more real estate below the frame and a little less up top.
Twin Lakes: Interesting perspective. With the sky being so featureless, and also some seams showing from the merge, I'd suggest less of it.

Thanks Todd! That was really helpful, especially for beginners like me.

The thing that struck me as I looked at these was, the light is not flattering! I'm learning that the quality of the light can be even more important than the subject. Early morning and late afternoon / evening, when the sun is low, can be a photographer's best friend. And dramatic, stormy weather - especially when the sun comes out to light up a foreground - can lead to awesome photography. Of course, you have to take what you get. If you can't be at a place at sunrise / sunset, you gotta do what you can. I think Todd gave you some good suggestions as far as composition and how to make them better in that regard.

Listen to Todd, and keep on working at it. You have a good start with these images, and a little work and you'll have some great ones.

Was going to comment on the over sharpening and mid day skies but look like Todd beat me to that. A good first post.

Oh wow! Thanks guys....those are very encouraging thoughts!

Good first work, agree with the above statements on the harsh light.