I use small fine diamond files,work out what pattern you are going to use and mark it out, consistancey is the key to a good looking finish . after the pattern has been cut rap fine emery around the tip of each file you used and polish out each cut. GO SLOW take your time ,dont rush, remember accuracy and lots of elbow greese .If you slip it is very hard to cover the blunder and it will stick out big time if the rest is perfect
Thats how I do it any way, for what its worth.
Kind regards Peter