Hey, it would maybe help if you could tell us the IV's of your pokemon. Because people are not interested in shinies that they don't know the IV's for. If it has random IV's, nobody wants them. If you could tell us IV's (and they are good), and what balls these shinies are in, people might show some interest. Also, if you have any rare ball females 5IV, list them up each time you are looking for something, because if people know some of the best things you have to offer, they might bother trying to land a trade with you. Also, as Tatertot said, if you are asking for something this big, get some really rare and valuable stuff. And if you have something awesome, then list it when you ask for something! Oh, and btw, although it is not have a problem to fill out the dex with a living dex in the bank, some people cherish their save files, and don't want to reset them no matter what.
Edit: Also, something that is really important, do you need it to have the pentagon? If so then SR it yourself, none of us will probably bother doing that for you.