First shots from my new gear on vacation

[SunTsu]

I've asked all the technical questions and received tons of useful info from this board and started what I feel is a decent starter rig. This is my first DSLR although I've played a lot with 35mm and P&S digicams. I've posted some other shots that are mostly test shots, etc, so I figured it's time to post some "real" shots from my trip to Italy. After all, that was one of the main reasons I wanted a nice camera. I'm looking for any feedback and tips anyone can offer.

The first shot was taken inside the Milano Duomo. The shot was handheld using a 5D and 24-105mm. I believe this shot has no PP.

[SunTsu]

Here are a couple more scenic shots. Both were taken in Morrone, Italy and were taken from inside a moving truck. Again, I used a 5D with 24-105mm. I don't believe either has any PP applied.

On the first shot, I'm not sure if it's good or not because although I like the colors of the sky, I'm not sure if it might be underexposed because the grass and water are really dark and I don't remember it being that dark when I took the shot.

[SunTsu]

Here are two more shots I took. I wasn't sure which forum to put these pics in because they are travel related, but are also animals and macro. Anyways, I'll put them here for now.

Both shots here taken with 5D and 24-105mm.

The second shot of the cow has some USM, but the first shot shouldn't have any PP. I'm looking for feedback on the amount of USM I applied to the cow too. If I remember correctly, I also used flash on the 2nd picture.