The other day I had a design project at work where I had to mock something up to see how it would look for a client. I asked my coworker who would be doing the physical work on the job if my mock up was OK and they said yes. The next day when they went to do the project they were in a foul mood due to lack of sleep and suddenly told me they didn't think they could do the project well, so I asked if i should adjust the design for them.. They just quickly walked away upset, said no I'll just do it, and punched a wall. They then did the project but it came out kind of badly. The customer asked to see a picture of the finished product before install and she was not entirely pleased. I told my boss about what happened, letting him know about my coworkers shitty behavior and he said don't blame him on the botched job, blame all of us.
What could or should I have done to prevent this scenario?
I went out of my way to ask ahead of time how to fix the design to make the work easier for my tech… but I can't win.