this is my chop done in 2 days for a 'contest spedy 2' with the local theme deutsch style. I hope you enjoy it.
base:

chop:

the car and the background have different light, the tires are too dark, the background has a low resolution, the shadow under the car is strange. The design is nice

I have to agree with Angel of Hell here,
However, I think all that it needs to fix it is a better bg with matching lighting! That's really all it needs.

The design looks awesome and your brushing on the kit is nice - it's just that background that really spoils it! So maybe fix that and post an update
But good try I love the stance

update!
I hope that's better

That looks much better dude!
The bg fits a lot better and the lighting works more
The shadow might be cooler if it was darker near to the car, but other than that good work