Double needles, aka "getting too big for my boots"

After feeling very smug about how nicely my mistake-stitch scarf turned out (the black in the second picture is accurate - don't know where the navy blue in the first comes from), I'm now getting my comeuppance in the form of double-pointed needles. Oooh-là. Not easy. I'm trying to make mittens to accompany the world's most boring scarf (the mistake scarf was knitted as a Christmas present for one of my favourite people). I'll persevere for the moment, but this may well end up being one of those projects that isn't spoken about in polite company.