Step 1: Paper Mock-Up
Believe it or not, this is usually one of the longest steps in making a new leather helmet.
Don't waste leather: Look closely at your sketches or the inspiration. How is this going to work in three-dimensional reality?
Before I begin a single piece, I know exactly how it is going to look at the end, and every step in between...
In this case, I have stayed true to the lines and form of the WOW design. To my delight, the game's pattern is quite functional!
Play with paper and posters until you have something that makes you glad. These pictures show what I came up with. Shown are a few stages of tweaking the forms. I always collect used posters from the trash at commercial stores exactly for this purpose.
It is a matter of taking flat, 2-D material (leather) and making it something with body, tactile, beautiful and effective.
Step 2: Try with Cardboard
Take your paper patterns and try them out with cardboard.
Does the piece still work with thicker material? Notice anything that should be changed?
Next time, it is permanent. And if your pattern is good, these cardboard peices can be saved to replicate the helmet many more times!