Magic Forums

I was just curious about voodoo dolls for numerous reasons. I want to make a voodoo doll as a sort of test, which if it doesn't work, I'll use it as a 'lucky charm' or something similar. So, to get to the point, I have a few questions that are much easier answered by people who practice voodoo rather than looking it up online or searching for books that are probably scarce in my location or unhelpful for my purpose.

How many dolls can there be representing one person? For instance, suppose someone made a doll to represent me, and another person has also done so. Assuming there can be more than one, which one would prevail in a battle of influence over me? Say one is used for good magic, and one is used for negative magic, would they cancel out?
Can you make a voodoo doll to represent yourself?
Does it matter what materials are used if there is a personal item attatched?
Also, can another spirit influence the voodoo doll. If the doll were placed somewhere unsafe, like a haunted location etc., would the doll be affected?
And when disposing of the doll, I believe the personal item(s) must be removed before hand, but if I chose to throw it into running water, does it matter which direction the water is flowing?

If you can answer any of my questions, you would help me immensely. I realize this site might consist of many voodoo practictioners, but any help is greatly appreciated.