Once the chocolate has cooled slightly, use a pastry brush to brush one layer of chocolate over the smooth side of the florentine. Wait for a minute before adding another coating. You can use a fork to make wavy patterns in the chocolate or leave them as they are. Allow the chocolate to set then serve.
If you've made Florentine wafers, you can fill a small plastic sandwich bag with chocolate, snip of the end with scissors and use it as a make-shift piping bag. Alternatively, you could use a fork to to drizzle chocolate over the wafers.