use this :
http://fr.games-workshop.com/hobby/materiaux/resine_verte/cheveux.asp
http://fr.games-workshop.com/hobby/materiaux/resine_verte/fourrure.asp
Its all about practise really the fur generally isn\'t a problem but the head is slightly more complex..
If your unsre to start with why not use a head that is already sculpted like on the Space wolf accessory sprue or an actual wolf head cut and trimmed to fit...
If your GS\'ing it first make the basic shape of the head then when it has cured add the details....