One of two ways.
If the chip is bad.
You need to get yourself a fine brush pin head size.
I use a special paint for chips that is self leveling for BMW and other cars, but it can be used on MP5.
I will be posting a link. Soon were to buy it from as well. It is not my company it is were I get the stuff for me.
But for now you can use the paint you get from mazda.
Clean the chip out very well. make sure the car is cool, in shade.
It will take time , take the fin brush from a art and paint store, use very little paint, use layer by layer. Try to not leave a big drop on the chip , but very very thin. Let dry.
I am doing a how do for the protegenetwork.org soon. Step by step.
This will be some time soon.
I have done it with mazda paint it will work but you need to take your time if you rush it will look like you did.
I have done this it can be done.