I found a pattern I like in a Burda magazine but it's a plus size one which starts at a continental 44. This translates as an 18, I need a 12/14. It has an inner and an outer layer with a twist at the shoulders which reveals the inner layer on the outside. It only has 3 pieces, I've traced it and I hope graded it down by 2 sizes, by measuring the increments, doubling then subtracting them. (After doing that I realise I need to add seam allowances too...) The bust dart looks a bit small, and low, and the whole thing still looks quite wide, though it's a loose fitting style. Has anyone any experience of adapting patterns in this way? The feature I like is the twist in the shoulders. I know I can toile it but I might spend time more wisely by using a shell top which I know fits and develop my own twist on the shoulders.