Just a quick tutorial on making molds for dolls!
Also a note: If you use anything other than Oomoo(shown) or Mold Max silicons from Smoothon.com, please be careful of using legos for molds. The Oomoo and Mold Max silicon is thick enough that it doesn't bleed through the sides, but other thinner silicons(like dragon skin) will. So be aware and test a small portion first if you're concerned.
While this is shown using Oomoo molds, I use Mold Max 30 for most of my mold making.
However, I do recommend using Oomoo Silicon if it's your first time making molds. It's cheaper and measured by 1:1 volume so you don't need to buy a scale for weighing your components. Just know that your mold will only last about 10 casts or 1 year before it starts to warp and tear.
If you want a tutorial on how to make a simple mold and work with silicon in general, check out Dan Perez Studios:[link]
he's got some great tutorials!