I found the project relatively easy to do. Here is what you need for your ingredients:
Dark or milk chocolate
Red and yellow food coloring
Chocolate chips or M&M's (optional)
I use a double boiler to melt my chocolate. I started by heating up some water in my bottom pot to a boil. While I waited, I lined a dish with a cover with aluminum foil. I sprayed the aluminum foil with nonstick spray. (You could use wax paper but I did not have any in the house, so I made do. You also want to make sure that your dish has enough clearance for the marshmallow after putting the lid on.)
Once the water was boiling, I removed the pot from the heat. I put the top pot on and put my milk chocolate in. (You could also use dark.) I melted it while stirring gently. If the chocolate stopped melted, I would heat the double boiler to low. Once the chocolate was melted, I spooned some in spots on the foil. The beauty about these snowmen--the chocolate puddles can be uneven. I let it cool a little and the put it in the fridge to cool the rest of the way. Once the chocolate was cool, I brought it out of the fridge to warm to room temperature as I prepared the white chocolate.
I melted the white chocolate in the same method as the milk or dark chocolate. I did add a little milk to thin it out. Once it was melted, I made a "puddle" on top of my milk chocolate puddles. Then, I stuck the marshmallow into the white chocolate for the head. You can also add chocolate chips or M&M's for buttons. After I let it cool a little, I put the project back in the fridge.
There are a lot of steps to this, but it honestly is not hard. For this project, I did not follow my tempering instructions to a tee. However, I have found that it does make creating fudge and truffles a bit easier. You can check this About.com article for instructions.