I really grew accustomed to 3D vehicle icons when I did the Ecclesiarch and Fortress of Arrogance conversions. I decided to dress up my Vostroyan vehicles with 3D icons modeled after the 'V' icon on the Baneblade transfer sheet. It's a pretty neat looking emblem with the possibility for some nice texture.
I started by applying one of the large insignia from the Baneblade sheet to a sheet of plasticard -- this will serve as the template for the shape. I actually want a slightly smaller version but I'm using the large transfer to get the angles right. I then cut out a piece of clear plastic from a blister pack (Yarrick, in this case) and taped that over the transfer to use as a substrate for the emblem.
To create the heavy 'I-beam' effect of the left side of the 'V', I went with a piece of 0.060" C-Channel, the rest of the emblem is simply 1-mm rod. I laid down the left leg on top of the corresponding piece of the transfer. The rest of the icon was cut from the 1-mm rod and glued down over the transfer. The last step was to add the skull between the two legs of the 'V'; easily accomplished using the 'Winged Skull' icon from the vehicle accessory sprue.
With the master completed, I heated up some water to soften a piece of insta-mold to create the mold to cast green-stuff versions of the emblem. Here's the first cast:
Not too shabby, though I might see what I can do about improving the depth of the eyes on the skull. I'll update on the next attempt. I also need to see where I can obtain Blue Stuff like Ron at From the Warp uses. I'm curious to compare that to Insta-Mold.