did u use PS touch-up the sky?
jz want to share some of my experience.
well i was in films production b4 as a art dept, not camera dept so me photo skills jz so so onli, but anyway for the shot like this we usualy "wet" the floor, jz to make the road more "darker" look more contrast, off coz u need lot of water by doing that la . maybe u can wait for someday after rain n the floor still wet u can try n see n' u also might get the reflection of the car. Another thing is your "main Object" which is your Gen 2, your car colour is abit blend in to the bg, i think is the colour of the car, maybe u can try some other colour ie: red... jz to make it more stands out.
well sorry for the long comment man, no hard feeling ok, although i'm not a sifu class plis dun mind.

cheers

wah u made me suddely become like a sifu leh , dun la i jz sharing my experience only. afterall we all still learning ma

Pic 3 is nice, but what's that below ur legs right side? it's a leaf or .....???
very distracting leh, i alway look at that "THING", maybe b4 u shoot jz remove it or use PS to remove it (more work to do la). Try n c la