Sorry for the spam of comments. I think it is a very good guide, but there are a few alternatives you can do underway:
The first one being that you can convert the dbc to a csv file and then use a text editor. This is more save and fast than the DBC editor in my opinion, but you do need a "help" line:
ID,Race,Gender,Skin,Face,HairStyle,HairColor,Beard,Head,Shoulder,Shirt,Chest,Belt,Legs,Feet,Wrist,Gloves,Tabard,Cape,0,Texture,
texture should be like this forexample "textureName-312.blp"
This way you can just mark forexample shoulder, and type in the should displayid.
Also the second thing that you can do is, to export the file as X3D..
This gives you a .png file instead.