GPof Baltimore '13 & Car Carousel - Feedback

Thought I would post some photos for feedback's sake, etc. I'm just starting to dip my toes into photography. I'm using a T3i and rented a 70-200 2.8 II for the event. I don't have a ton of experience with different lenses, but after using the 70-200, I'm saving to buy my own. I haven't really delved into post processing because I'm not sure what I'm looking for out of it. So, I guess that's the feedback I am more after beyond composition and technique.

So, check 'em out. Picked a few of my favorites.

Worked on panning shots quite a bit. Got better as time when on. This was one of the better. Almost got the entire car.

1.

IMAGE LINK: https://flic.kr/p/fFmJ​So

Caught a Ferrari hitting the tires. Probably a good candidate for PP to sharpen up the photo. One of my favorite shots.

2.
IMAGE LINK: https://flic.kr/p/fF51​nP

Thought it was a nice pit lane shot.

3.
IMAGE LINK: https://flic.kr/p/fF4W​gc

Visited the Car Carousel. Found some great P-cars, Ferraris, Lambos.

4.
IMAGE LINK: https://flic.kr/p/fF4S​HR

5.
IMAGE LINK: https://flic.kr/p/fFmt​7C

Back to racing.

6.
IMAGE LINK: https://flic.kr/p/fG7R​Zc

Not the best, but I almost caught the helmet. Despite it being through fences, etc. - still like it.

7.
IMAGE LINK: https://flic.kr/p/fG7v​qT

Obligtory O's signage.

8.
IMAGE LINK: https://flic.kr/p/fF5b​UV

Thanks for viewing.