Now to the big, big secret: How to replicate the blocks and tackles. Now, that one is extremly simple! First, take a piece of thread and prepare a knot. Put one end of the thread through the hole in the knot, thus creating a loop hole. For things like the shrouds, which should all look alike, put something of a suitable size in the loop hole (in this case a skewer). Fasten the knot. It might be helpful to secure the knot with a bit of glue.