The end of a wooden toothpick, sparingly dipped in oxidisingsolution, has given me good results for precise placement; it worksparticularly well for twisted wire edgings.
Dana Whitehorn-UmphresAlbuquerque, New Mexico, USABirdfish Designs
"What is the best way to achieve a dark finish in the creases and around the edges?"
I use a small piece of buckskin, but a soft cloth should work aswell, charge with tripoli and rub the area with the leather on thetip of the finger. Much better control that way. You could also gluea little piece of soft leather on a wooden popsicle stick.
Jerry in Kodiak