Hey, i’m having some problems modeling the the front window frame on a rolls royce torpedo phantom.I’ve been following the blueprint which seems pretty accurate, finding references is hard however 
Blend file below of my screw up, blueprints should be packed with file.
Roll.blend (639 KB)
I’ve made somewhat unfinished spline cage of your model I’ll think you should be able to finish the rest by yourself and this is will help you to asses how the models proportions should look like. Once you’re finished modeling the spline cage you can then copy everything and transfer it to another layer as a back up because you’ll be converting the original spline to a mesh with Alt+C which will enable you to snap mesh to edges for easier modeling. Here’s the .blend file.
wow, thanks. That’s a pretty nifty method.
No problem, PM if you’ve got anymore questions.