Ooh, I love a wavey knit! We've got a cardigan with a simple-yet-effective stripe pattern, which I love, but the jumper is the star of the show here. You could put any colours imaginable in those waves and they'd look absolutely fantastic no matter what. With the edge being wavey too, its a talking point garment for sure. If you're not fancying creating the waves, the round neck cardigan is easy knit, so there's something for everyone here!
This pattern has been written for King Cole Luxury Merino DK, but as long as you check your gauge you could probably use any King Cole double knit. You'll need 3.75mm and 4mm needles and nine buttons for the cardigan.