By Jessica Feder-Birnbaum As a licensed real estate agent, I’ve received countless distraught calls from prospective renters when apartments they have applied for have “fallen through.” After submitting numerous client applications, I’ve learned several steps to take so an application doesn’t get denied. Whether you work with a broker or search on your own, here’s what you need to know to prepare a winning rental application. Qualifications Do your homework. You don’t want to fall in love with an apartment…