I've seen cakes with rectangular chocolate panels going around the side of the cake, which is the effect I'd like to do. How do you make the panels? If it's cutting them out, I don't think I can cut them so they're identical... Any suggestions? Also, how do you attach them - do they stick to buttercream?
Mich turner uses strips of modelling chocolate rather than tempered chocolate. You'd be less prone to breakages if you use modelling chocolate. Literally just roll it out and cut rectangles to the desired height and width.
If wanting to use chocolate there are a variety of 'chocolate shard' molds available. I use melted chocolate to attach.
I use modeling chocolate to make panels. My recipe is here: