Hi Andy welcome to the forum from a fellow Englishman, I'm in Devon, quite a few of us here now, your soon fit in, need some photos of your work, once we can see where you are having a problem help will pour in. Some very clever craftsman here doing marvellous things with flat sheet in many materials the link is one of my favourites, just shows what's possible
http://www.allmetalshaping.com/showthread.php?t=15027
Enjoy the site