coronet sketch 2018. This shows improvement over my skills in the 90's.

Your first and most important tool as a jeweler is a pencil

it records ideas. Makes sketches. makes notes about what went well and what did not go so well. It records your memories and experiences so a month, year, decade from now you will not have to reinvent the wheel. So go grab a pencil and take a good hard look at it and think about what you can and have been able to do because of such a simple tool.