Backgrounds

It's time consuming and fiddly to do full backgrounds, sometimes I think it enhances the picture, other times I feel it draws attention away from there car.  I try to avoid using any black outlines to try and soften the background to avoid this.  When creating a setting from scratch it's really easy to get the perspective slightly off and end up with a picture that just looks 'wrong', invariably this is only noticed after the picture is finished - so frustrating!