Hi David, you have run into a common problem associated with drawing from prints. 2D flat drawings can''t represent curvature and perspective/parallax. It's a nightmare where the outlines look great until you try to use them and then you find out things don't line up correctly from the different views, so in circumstances like this 'artistic licence' comes into play. You will not succeed in trying to copy this perfectly, you will have to model this on the principle of what it looks like. As long as it is 'close enough' then it should be fine.

The other alternative is to get a picture of a persons head that offers a front and side view. The use something like photoshop or gimp or whatever photo editor software you use. Import your helmet outline for each view then use stretch and scale to make the helmet fit the persons head better, then save them out and then try modelling from them again.

The above theory is great as long as it's a helmet ment for a human head. If it's an alien helmet then you are free to model it according to fantasy rules.

Martin Spencer-Ford