Breaking up bark/drizzling chocolate: it might seem to make more sense to drizzle the chocolate over the bark before breaking it up into pieces, but I've found it works better to break up the pieces, then lay them flat and drizzle the chocolate, so that you don't have to handle the pieces a lot after the drizzle is applied. You will have to take care to not waste drizzle on the parchment but it's not hard.