I did some googling and found a few brilliant tutorials that I'm recommending:
The Busty Traveller
Also, I have a big craft project on the go currently, potentially for the Plus London meet. It involves adapting the neckline of a vogue pattern, which I've never done before! I'm taking it slowly and not really posting about it because I'm a bit scared it won't work out (though I am photographing it as I go, so hopefully next week I'll be able to update about it!). I'm thinking about making one of these collars to accompany it, probably the fake fur style as there are a few shops in Brighton with permanent faux fur remnant boxes.