If the damage is merely faded paint in patches David use T cut with a duster.
It looks like liquid polish but contains mild abrasives, rub in a circular motion on the affected area.
Rub it off and then apply a polish in the same manner.
For mildly rusted areas or blisters, you will need fine wet and dry carborundum paper,check with your local parts supplier.
You should get a block of rectangular wood that fits nicely in the palm of your hand,wrap the wet and dry paper around it,dip the wood and wet and dry in water,rub down the blisters until smooth to the touch.
The reason for the water is to stop the paint that you will remove, clogging up the wet and dry paper,this will save a bit of money,wet and dry is expensive if you keep throwing it away.
You can now dry and apply a rust protecting paint, zinc or some such,again take advice from your local stockist.
Get masking tape to protect parts that dont want paint on.
Let the area dry off and apply a grey primer paint aerosol.
Leave to harden.A couple of hours.
Apply the top coat leave to harden overnight,gently apply the T cut and polish again.
You will make mistakes, we all do, but practice makes perfect.
I have mainly touched the front and back wings on mine,they aint perfect,but they look ok.[frame]

[/frame]