Ok guys here I'll try to help you:
- programs to use: Adobe Photoshop or Paint Shop Pro
- Open a new, empty file with: width 40cm and height 10cm
- Take the middle of your helmet (20cm) and draw a thin black line to see where you have to draw the lines.
- Use the brush tool to paint your helmet as you like
- To view your helmet you have to do this:
* turn your image 180°
* flip your image horizontal
* save it as ...(yourname).tga
* open zmodeler and import the shape (use gp4genius if you don't have it)
* press 'E' and select your file
hope this helps you!