well, to be honest its their rights if they want to share how to make it or not... its not like they had to share how they make anything.... anyone have their own reason why they share their collection, even anyone doesnt entitled to share where they buy their figure from or who is the custom maker...
I for one not taking commission and only do customs from me and for myself, and just do these 'cos of my hobby thats why no such thing as secret from me, i welcome every questions how i make things so everyone can do the same and enjoy their hobbies.... But then again everyone is different and it is not right also pushing someone to reveal how they make things... it is a collectors forum afterall not a training and learning forum...
there are a whole lot of videos on youtube and internet for it.. "research" and learning thats the key... hehehe...