mold making is always scary stuff...
I'm scared every time ....
Take a look at the smooth on homepage , there are a lot of tips that will come in handy.(also instruction videos)
@ Sunnywhite : seeing that you're from the netherlands , you might want to check this site : http://www.polyservice.nl/ , it's a nice supplier of all the stuff you'll need.
( just don't forget to work in a well ventilated space...)
Before adding the details you should try to get the overall helmet as smooth as possible.
Otherwise you might end up sanding the details away.
Looks really nice in shape already , keep going