Really beautiful job Artie. Have you tried 0000 steel wool to fade out your die job. That is what I use. Don't forget you can use Acetone to remove it all and start again. I use the Tandy leather die after I scrape and sand the back. I learned a lot from a friend of mine. Practice, practice, practice. Your skill with design and composition tells me you are talented in other areas also.
Dick Bernier