Perhaps you are wondering what the best server to choose, so will a brief metaphor of my work, it is not my intention to say anything really beyond my professional experience (zero); A flower shop is open to an audience which you are part, which flower would you choose to embellish your table for a special dinner? An expensive flower but not so attractive and you will have little contact, or a simple "Portulaca grandiflora" that certify you an extraordinary graciousness? If you chose the second option is the correct profile. I do not have a certificate, but I have the creativity, talent and plenty of professionalism to present.