A 12V power source is generally shown with polarity marked. Your 12V source has both leads going to (+) pins which as I am sure you can imagine , begs the question " since when do 12V power sources have two "+" leads. I'm sure you have an explanation but whatever it is , if you submitted that schematic to an engineer in a company he would reject it and ask you to label the + and - terminals of the battery (or power supply) and if possible explain why both leads go to + pins.
Sorry for my wanting notation, my background is in programming, not electrical engineering.
I was trying to show the 12V going to the two Common Cathode connections on the 7 segment LED, not that the 7 segment was providing the power.
This quick schematic was trying indicate how I've got it wired up, so that people could catch any big mistakes I'm making. I'll be screen printing & etching the boards myself, so they'll be no engineer to confuse - I'll just be confusing myself.
As I mentioned, it appears to be running fine, but I'm worried that when I run it for days upon days, there might be a problem (overheating?) that crops up that I'm not seeing now when I run it for 15 minutes at a time.
Thanks for the clarifications.