On the edge where I would be attaching it, I rolled the gumpaste out a bit and thinner:
I made three PBR party hats for the gumpaste to dry on, and dusted them liberally with cornstarch:
The next thing I started on was the Han Solo figure for on top of the cereal bars. The first thing I did was find a photo on the internet and print it out in the scale I needed. I can't emphasize how important scale is to making your cakes "look right". I was original planning on doing an 11 x 13" size for this, but scaling up the picture ended up with a 8 x 22" Han, other sizes wouldn't have looked quite right. I printed out the picture, then covered it with a sheet of waxed paper and just started using leftover modeling chocolate to carve the figure and features, using gumpaste tools.
When I was done I did an experiment to see how well the lustre dust/vodka would cover, and wished I had started with a grey modeling chocolate to begin with.
Then I stacked the cake, filling with ganache.
Adding the gumpaste eyeballs:
When I got home I made the chocolate topping, covered the bars, then used a long spatula to loosen Han from the waxed paper and press him into the chocolate. I used a small plastic sandwich bag crinkled up to give texture to the topping, then popped the pan into the freezer to set up a bit so it didn't melt the figure too much.