Antique on black phone case with colored flowers

[mike5680]

I'm making my (very particular) wife a new phone case.  She wants it black with her initials stamped in and a flower on it.  The flower needs to be in multiple colors.  I am planning to use acrylic paint to do the flower.  She wants antique on the flower to show the cuts and maybe some antique in the initial stamps to make it show up a bit better.  My thought is to carve and paint the flower, stamp the letters, then dye the balance of the case black.  I'm unsure about the next steps (tancote, resist, oil, etc).