Although I say so myself, when I was much younger I was pretty good at standers. Most of my shooting was hunting and the vast majority of my shots were taken standing. Then, when I started FT shooting and discovered the massive improvement in accuracy courtesy of the sitting position, I transferred this over to my hunting too and would adopt the "semi-FT" position whilst hunting. Success improved further and, at the end of the day, we owe it to our quarry to be as accurate as possible.
But that's made me a worse shot with standers. I seem to actually fare pretty okay at Bell Target when I have a go. And I think the zero magnification of open sights does my confidence with standers, and results, a lot of good. But I really must practice my standers more and get better at them again.
Some really good tips etc up above.