One thing to be sure you are aware of is the way your front bag on the forks of your motorcycle. If your bag rests too low, often times the bag will rub on the front fender of your motorcycle. When it does rub, this could possibly take the gloss coat off the surface.
This is something to take heed of. Thus, anyone regularly cleaning their motorcycle can also tell if there are scratches or areas that need attention. Lots of motorcycle magazines will cover this. Look to Throttler Motorcycle Magazine for tips.
If this happens, there are a number of things you can do. The first is to start with a wax or polish.
Begin with a soft towel. Consider using a custom screen printed t-shirt. They are 100 percent cotton and can also be rough enough to assist with the compounds in the polish material to actually smooth out any scratches that might have occurred.
In a circular motion, be sure to rub hard but do not cause too much friction or heat. Keep a medium hard motion going. This in time, should take the scratch out of the damaged paint in your custom motorcycle, Honda dirt bike or metric cruiser.