The way I do a rope is with a round tip and make an "s" that lays down and overlap them starting with the bottom of the previous "s" to make the next one.. You may be able to find the instructions on theWwilton website or Youtube.
http://cakecentral.com/gallery/2036205/cherry-blossom-birthday-cake
Here is a link to a cake that I made with a rope border. I used a tip 22 star for it.
You could also use fondant/gumpaste - just use an extruder or roll out two long, very thin "sausages" - line them up, then twist from each side in oposite directions. The tighter you twist the tighter and more "rope like" your rope will be in the end
Then just place the rope around the emblem.
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