Really nice try of brushing!!!
It is not finished this is a kind of wip!!!
There are lot of faults/mistakes here are some of them:
- not finished
- lot of bad selections -> use pen tool for selections

- windows are totaly wrong, they shoould be transparent
- low resolution image
Btw this mistakes there are some good things tha u have done here on this chop:
- side reflections are looking good, just needs some blue & yelow in it
- rims are also good maybe front one is just a bi off
- nice BG cange
I have sead everything.
watch some tutorilas you have a lot of tutorials here on autemo tutorials and youtube