
You need to be very careful when teaching scent. It is very difficult to teach using your own cloths, you really need to to do it with someone else so you use their cloths and only your own as the correct one.
Personally I would not teach it straight on cloths. To get her used to finding your own scent when out on a walk have a article (I find hair scrunchies good) and drop it in some long grass without her seeing it and send her back with a find command. Keep the area small, don't send her too far or when you go into the ring she will try scenting too large an area.
Move on to someone putting out articles that are difficult to pick up and then putting out your scrunchie or similar that she is familiar with. When she is 100% bringing back the right article, you use an article she is not familiar with, that will tell you if she is sighting or scenting if she brings that back. Only when that is 100% I would move onto cloths. When moving onto them I would introduce your cloth to articles then move onto tiled cloths with only yours untiled.
I think you are confused with using treats on the cloths, they are only usually used to get the dog to actually put her head down and go over the cloths, ie you would not put your own cloth out there, just put the treats on the cloths and get her to go around them (usually in a circle) picking up the treats, when the last tread has been eaten, call her out and praise.
Don't rush scent, it is the hardest exercise to put right if they lose confidence.
Good luck.