**Maybe someone can help me with this question.  After I create my charcter(figure).  I export her and save it as a png.  The only problem is the first one  was so small could barely see it.  

Then I made another one and it was a bit bigger and then the third one was a medium small.  

How do you create a charcter ie; faerie, elf, or woman in the preview screen so she fills the screen with deminisons such as 600 pixels wide and a height abour 920 pixels and after rendering maintains the height and width as above.**