Hans, there's always time to improve your handwriting.
A friend of mine has made teaching it her life's work:
http://handwritingrepair.info/
Gunnlaugur SE Briem, a noted calligrapher, type designer and author has a page on this as well:
http://briem.net/4/4.1.1a/4.1.1.1.quick.htm
His site has a number of books in .pdf format....
William