Design #66 and #67 are meant to be used together #66 would be the company brand mark and the icon from #67 could be used to etch surfaces and water mark photos of product line etc.
I get it, though I did try to make my design #36 to work with the letter F as right wing but it looks like crap, I did a design with AF but you marked as not interested so I've entered it into another contest.