Commissions are for the brave. The feedback was great:
"It arrived and it is beautiful! The photo didn't quite do it justice. I will take it to the framers today."
I know what you mean, I had one which went wrong - never again,,
I restrict myself to commissions with huts and/or pointy nosed dogs these days. I create two originals, if the buyer requests changes, I politely decline and put it in my shop instead. I had a bad experience once, repainting a cows eye 'darker'.