Thanks for the comments.
Gary - My CAD skills are entirely self taught and would probably make any self-respecting CAD professional cringe at my ham-fisted use of it, but I get there in the end, partially being stubborn and knowing that what I want it to do should be possible. Having and end-goal in mind certainly helps rather that just drawing something for learning sake.
Harry - I grew up in the UK and moved the the US nearly 20 years ago. Still have a soft spot for the UK aircraft and can remember seeing them all at the airshows during the 80's and 90's. Lightnings, Buccaneers, Phantoms, Harriers, Jaguars, Canberras, sadly now all gone.