And keep in mind... other then an engine cowl or a wing fillet... a canopy is not an easy thing to surface.... it is a 3 boundary surface.... there are some tricks... simple ones, that will give good quality.... but just plugging away on your own, you aren't likely stumble onto these techniques.....
http://www.mcadcentral.com/ has some good resources if you use one of the Big 3 and little 1
I have about 10,000 hours of using Pro/Engineer (now called WildFire 4)..... and it is fairly capable.... suprisingly enuff.. the past few upgrades have actually been improvements!!! lol
If you just want to get a canopy surface, the best/fastest way is to define the boundaries and a few cross section curves (in 3D space... or like um..... station lines, butt lines, water lines) and let someone surface it for you......
Make sure everyone is on the right page for units.... he he he he