When you say "aula" you may mean aura. If the Carrara aura function takes too long, you can try instead a similar effect in photoshop after the render is finished. It involves duplicating the render layer and placing the duplicate over the original render, blurring the duplicate slightly, then increasing its brightness and reducing its opacity to 20-40%. The girl is very cute, and does not appear to be a Poser girl. You did a very good job modelling her and her dress. Two things to consider in further modelling are: 1. her feet are rather large. 2. she lacks the ankle-bone protrusions on the sides of her ankles.