Fan will be encorporated. But, if the plastic casing gets warm, (which it does) then the heat sink will work nicely. It will sure beat the acrylic I was going to use - as the acrylic effectively trapped the heat against the LEDs.
Pictures? do you want pictures of a pile of LEDs and resistors? Or of the broken shards of acrylic?
I'l have some pictures coming in due time no worries.
Andy