amazon listing - open to bidding

Hi I am seller on [login to view URL] for over a year now and I also reside here in CANADA, my concerns are the following 1.] I need help on creating variations under electronic categories since I am selling cellphone cases 2.] I need help on making my description look more professional probably XML? no idea how to do it Please let me know how the fees work, since this is my first time on freelancer Renato Garcia