This is one of my first projects. I got my inspiration from seeing some of these products, http://www.kentonsorenson.com/. I want to make a wallet or phone case for myself, and I want it to have that natural look. I have some veg tanned leather, but I don't know what oils or finishes to use to give it that look. I like that fact that it gets a little darker over time, with use. What products should I be using for this project? Thanks.