That is really close Dave...
You can run a small three corner file down the center of the high ridges with just a slight cut this will give the illusion of the braids in the rope.Also all you would really need is to round over the high rigdes,this way it looks round and not just have sharp edges.but this is just a matter of taste,Yours does look really good.I wish I had a picture of some for you but I dont.Maybe one of the other forumites will have a picture of some that they did.
Bruce