It is hard to fit the stencils to all the fan made helmets available, but with some tweaking (as others already mentioned) you can achieve great results. Here is some interesting info regarding the resizing/cutting of the back plate stencils (but valid for the other sections too) ==> Asok Cold Cast Helmet Template Question or a nice tutorial made by superjedi ==> Template Sizing Tutorial.
wow thanks! that helps alot! cutting the panel into three pieces will help with scaling it for sure! thanks everybody for your help. i well get to work on it this weekend, i will post what i manage to get done