You don't have to go in to all the details of the failed job. In California, I believe that your former employers are basically limited to stating when you worked there and in what capacity, just say...
You are certainly in a better position as a licensed person to get a decent job. Although the opportunities for LVNs seem to be decreasing, they are still out there. Just in fewer specialty areas....
Everyone develops their own style. When I first started I found myself coming up with new forms to organize my shift every week. After awhile, it just comes more