When I was a kid, I would try to mix watercolor paints, to get a new color. All I ever got was a muddy mess. Many years ago, I tried the same thing with stains, and got the same results. So I haven't mixed stains yet. I experiment with a scrap from the blank, so I know how to get the color I want. But I always let one stain dry completely before applying the next.
This was two coats of tannic acid, one coat of iron nitrate... blushed and rubbed back. Then a coat of LMF Maple, followed by a coat of LMF Cherry. And for the second (maybe third) coat of finish, I added some LMF Cherry to the oil. Got the color I wanted.

