supposedly augustus is REALLY good at painting, but i have never seen any of them in person.
and there is a guy on the telecaster forum(tdpri.com) named ron kirn, i have seen some pics of his finishes and he is REALLY good.
i have never worked with a metallic finish so...... im not sure what the protocal would be for it.
(sometimes you gottsa sand the color, sometimes not)
cross may be of some help.....