It looks like you need more reach, as you are losing picture quality through cropping. I like the composition in #4 , #1 & 3 look soft due to the cropping, I'm not sure about #5 unless you was unusually focusing on the last car in the group ? Try a 300mm if you can for Brands, maybe use the 70-200 on the inside at Druids, also better light will help with your picture quality. You have some good ideas there though.