I tried that and still messed up, so now I put a big R (for right side holsters) on the front and write Smooth or Rough on the pattern. Also, after making more than one right hand when it should be a left hand, I modified my software so it prints a big L on the work order, and when I look at it using the software, a big red L shows up on the screen. This has helped.
Here's my main screen. I wrote this software.
If I check the "sound" box above the exit button, a 15 round burst of gunfire blasts off on exit. Just for fun.