By way of example about how trivial this is I'll share my worst fuck up.
We had just moved house and had to renovate and decorate extensively.
It's a 17th century cottage that's very long with Windows on both aspects, so in total we have an unbelievable 26 non-standard Windows.
After much agonising over decor I selected the window treatments for most of the downstairs - kitchen, drawing room, snug, dining room and study - 10 Windows in total.
Given it was supposed to be our "last" house I went mad and ordered stupidly expensive silk interlined curtains and blinds.
The order was placed with Laura Ashley and I checked and signed for all the measurements I had done 3x over to check and written down.
Total cost was over £5k (I won't divulge how much cos I'm too embarrassed).
When they arrived I was so excited. Then mortified.
The measurements were all right and yet all wrong. As I had read them out to the assistant I'd transposed width for depth. She wrote that on the order form and as I'd checked and signed it (carefully I thought) to make sure the measurements were right I'd totally missed they were in the wrong column on the order.
So I'd ended up with curtains that should be 2m long and 80cm wide looking like a pelmet.
I though LA were in the wrong then double checked the order and just fucking cried and cried. Rang DH expecting him to be furious but he just said "look we will sort it. They are just curtains - yes expensive curtains - but nobody died. Stop worrying about it and we can think about what our options are and can chat it through". I remember thinking bloody hell I know a love this guy but I'm not sure I'd be that calm in reverse!
So I can safely say burned rice is not a major issue in this house.