The yarn looks lovely. It was difficult to pick the shade as ravelry photos of the colour ranged from really strong blue to dark grey. But it’s exactly the shade I hoped for!
Knit a test square (woop) and switched to 4.5 needles. Broke the yarn twice by knitting too hard, the tweed yarn is very different in quality to the stuff I’ve used recently (pretty much the opposite of cotton) and has some weak spots and bobbles which makes it a bit fragile, particularly when casting on. Note to self to be more careful when knitting and hope it doesn’t mess up my tension too much.