After having soaked the pouch in a lake an dried it again, the tannin smell is pretty much gone now. The skin has been oiled and was today softened by breaking it in. It takes time. To get a more even result I would use a sharp, shredding object, but due to the risks of tearing the thin skin and that the hair will be out anyway, I omitted this step.
The rough, hard edge on the thicker skin on the "rim" is cut off and evened.
All that is left now is to sew up a hole and a tear. I also want to make a buckskin lining on it if I have enough scraps left. It will be wrung back for sewing, but for this picture it has been left hair out, like it will be in the end.
This is just the tip of the ear. I am also thinking that skinning the whole ear would make easy, quick to make mittens. Especially smaller roe deer ones for children.