Servitor Interview?, Could a method used by fiction authors be helpful when creating entiti Options

This may sound completely stupid but forgive me I'm a noob to all this. (IMG:style_emoticons/default/baby.gif)

I've heard that sci-fi and fantasy authors 'interview' their characters by imagining them sitting across from them in a room and asking questions. The answers are supposed to let you get to the know the characters more.

Could this be useful if you intended to give a servitor/tulpa/whatever a personality? I was thinking about creating a 'friend' servitor just to start out with, and I was wondering if this could help.

And if it could, what would be some good questions to ask?

Wow I'm really learning a lot here at Sacred-Magick I think it's clear I have no experience with creatings things right now I'm just double-checking things I've read elsewhere and thanks to everyone that helped me I really appreciate it.
I read that servitors were, when the idea of creating them was fairly new, based off living people sometimes.

I hadn't thought about how your servitor might change with you opinion of the person as I thought it really was a very separate thing. Almost like putting on a halloween costume, you can dress up as a vampire, act like a vampire, but you are certianly not a vampire. So a servitor is a spirit 'wearing' a physical 'costume'. Then again apparently not. My biggest fear had that this 'doppleganger' could try and harm the actual person.

Also, I just randomly said my sister because creating entities requires a lot of concentration and you have to know exactly what it will look and act like. And it takes less than a second for me to get a clear mental image of any of my family and friends.

Maybe a totally fictional character created by me would work better? I could go along with trying to create it without ever drawing a picture of it and showing it to anybody, describing it,ect. so no outside influences could mess with it and I could have a very set opinion of it with a simple character profile.