It is so hard to find the perfect grey.
They so often come out with too much blue or look ever so slightly lilac.
Painting onto large squares of lining paper and moving them around the room so you can see what the colour is like in the changing light of your space was the best practical tip i have learnt on my Interior Design course. I'm so over dodgy paint squares plastered onto my walls! I think i'm pretty happy with the colours we've ended up with...so many finishing touches still to do.
Now to find the perfect 'reasonably priced' curtain fabric! It's not an easy job.