ok i had someone look at these and i think you would really need the original pics to appreciate the changes, o well
what program are you using?
In photoshop you just take the wheel and remove any background till you have just a circular rim.
Select the wheel and copy it.
Place the wheel into the untouched original picture. Then use Free transform to resize, rotate, and skew it however you need it over top of the car.
If you can find another car at the same angle with the rims your trying to put on already installed, its a lot easier because the angles are already correct.
-Chris
The Impala def looks better than the Neon. Very subtle mod, but noticeable nonetheless.