Key Decor Alert: How To Get A Feature Wall Right

With apologies to CNN whose Key Race Alert has seeped irrevocably into my brain, I bring you today A Key Decor Alert (and if I knew how to add dramatic music I would). Anyway.... The Key Decor Alert (and repetition is almost entirely the point) is that A Feature Wall Is Not (necessarily) a Mistake. But you gotta know how to do it.

the feature wall is back via unique property company

Now, for many it never went away and while I have long maintained that it can look a bit random and also as if you didn't have the courage of your decorating convictions, I have recently worked out what, for me at least, was the problem.  The issue, I think, is white paint (again - it's so often a Decorating Demon - and that might be another Key Decor Alert: White paint often isn't the answer). How many times have you seen a feature wall in perfectly pretty colour or a gorgeous wallpaper with the three other walls all in white?