Great point! I cant stress enough the importance of double and triple checking all your wiring.
One tip I have found handy is to make a copy of the diagram. After the build, I check each lead and value and then mark off that connection point with a highlighter. Then I know what I’ve tested.
It seems like a pain at the time, since you are so excited to plug it in and see it work, but it saves so much time troubleshooting (not to mention safety) to take the extra time and triple check.